The best hammer drill is the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Hammer Drill, Cordless, 1/2-Inch, Tool Only (DCD999B) it's has a metal chuck and an actually a wrap around auxiliary handle for the best hammer drill applications, with the flexvolt capabilities it has nearly endless battery selections as dewalt continues to add new innovative products. This is the top of the line professional grade tool for professional wood working, and masonry work. 

Drill/Driver weighs only 2.9 lbs. with battery for reduced operator fatigue

Compact and ergonomic design at only 5-7/8" long

Mechanical variable 2-speed transmission (0-500 & 0-1,700 RPM) for a wide range of drilling and fastening applications

Makita-built Brushless Motor delivers 350 in.lbs. of Peak Torque

Engineered with a metal jampot design for increased durability

I love the size of this set, out of all my drills and impact drivers this is the smallest and lightest, it comes with 2 1.5ah batteries, that brings me to the downside, they do not have a battery gauge on them which is usually a deal breaker for me these day (we are technology junkies now) but with the deal i got on the set outweighs that con, they also pack a good punch for such small sizes, and that's the only other problem I have with them since they are so compact everything is kinda jammed together making the clutch a tad inconvenient when you go to loosen or tighten the chuck the clutch often turns with it, other then that they stack up really nicely as a set, and the lights on both are really bright and light up exceptionally well, so if youre a tradesman and you often have to get into tight corners or cramped areas this is the combo for you, and the black shell is a really nice color on these. 

The second best hammer drill, driver I've been able to try is the BOSCH GSB18V-490B12 18V EC Brushless 1/2 In. Hammer Drill/Driver Kit

It has plenty of power the only concerns I have with this tool is when you go to Chuck in a different bit the different settings on the chuck, to go from hammer to drill to screw, changes every time you lossen or tighten the chuck, and it doesn't have a side handle for heavy duty applications, so this is a hammer drill for the lower end of drilling through concrete, it's best work Is in the mortar between brick work, ie. Running wires/cables through an exterior wall. Comes with one charger and one 2ah battery, and in my opinion the best color tool bag out there. You can't beat a nice royal blue. 

This is my everyday go to set, I absolutely love it, it's compact and yet still extremely powerful and nible, you will love it, it has a lifetime warranty which you can never go wrong with you get 2 batteries a charger and a tool bag, oh and of course the drill and impact driver, for right around 200 dollars usually you can find a good deal on it though, try finding the power these put out which rivals the higher priced brands, you can't this is a no brainer and the 18v batteries will fit ANY 18v ridgid tool, 

Here's a little more about this true gem of a set 

This RIDGID Combo Kit features a 1/2 in. drill/driver, 4-mode impact driver, (2) 2.0 Ah batteries, charger and tool bag. The 18V SubCompact Brushless 1/2 in. drill/driver delivers 500 in./lbs. of torque to power through tough applications such as drilling large spade bits through 2x4s. This drill/driver is 15% more compact and 25% lighter weight compared to the 18V Brushless model (R86114), for a lightweight design and heavyweight performance. It features a 2-speed gearbox that allows users to match the torque and speed to the application, and an LED light for improved visibility in low-light situations. The 18V Subcompact Brushless 4-Mode Impact Driver features 3 speeds and a self-tapping mode to prevent overdriving, breaking, or stripping screws. This impact driver is 25% more compact and 30% lighter weight when compared to the R86002 impact driver. As always, this 18V SubCompact Brushless 2-Tool Combo Kit is 100% compatible with all RIDGID 18V batteries. Best of all, this kit is eligible for the Industry’s Best Lifetime Service Agreement, simply register within 90 days of purchase for FREE parts, FREE service, FOR LIFE.

If you need a cheaper option for a hammer drill these will do the Ryobi 18V ONE+ HP Brushless 1/2 in. Hammer Drill features a brushless motor delivering up to 29% faster drilling in Hammer Mode, saving time per drilling application. Its impressive 0 - 31,000 BPMs and 750 in./lbs. of torque, model number  PBLHM101B,

There is one thing I'm skeptical about is the side auxiliary handle that attaches to little dimples on the drill, I have the impression that after you use this for drilling brick or concrete the auxiliary handle might twist off, other then that it's a pretty powerful drill, This was one of those once in a blue moon buys, so I had to picket up, it is the HP version, and is very comfortable in your hand, it comes with the green ryobi tool bag, (not my favorite) color, the auxiliary handle and two Ryobi 1.5ah batteries and of course the charger.

One of my favorite DIY drill driver combos, is the ryobi model PSBCK01K this one is more for your around the house projects and your diy type jobs, it's the compact size and is a great tool for the price coming with everything you need to tackle any project at home, and even a nice choice for a shop tool, we used this in the shop for building kiosks, we've been through about two of them in a 10 year period, and the 2nd one is still working to this day, this model is the newer version of the one I have now,  and I purchased this new model for work at home and it works just as well if not better, It hasn't been used nearly as much as the pervious one I own but it is definitely a improvement over the earlier model. I originally began my ryobi tools collection when ryobi was still blue in color and since they haven't changed the battery platform it continues to be a great tool. Upgrading through the years they continue to improve their models and I am quite happy with that, I haven't used this drill in a field style environment so I'm not sure how they stack up in that environment, but then again this is more suitable for the diy/home owner, however I did use thr impact to install a 4,500 picket fence with no problems, and is still good as new, so it very well may be a good choice for the carpenter starting out. Ryobi seems to be making more professional quality tools.

One of my favorite drywall screw guns is the dewalt DW272 comes with an 8 foot cord and 2 stage trigger, pressure trigger and locked on feature for quick rapid performance, 

I first used this dewalt drywall screw gun was a side job, adding on an addition to a friends basement, the ease of use was incredibly nice, I was probably around 10 years old helping my dad, (he's the reason I am passionate about wood working and finish carpentry) and now years later I'm still going strong, and I still love this tool, the lock on trigger is a great feature, just lock the trigger in the on position and you can go from screw to screw for rapid installation, it's a very durable tool and it hasn't let me down yet, I have upgraded through the years but the performance is very consistent, and that is why I highly recommend this tool for drywall installation 

The best budget friendly impact driver is the Craftsman V20* Cordless 1/4-inch Impact Driver (1 Battery) features a high performance motor providing the user with added torque and speed for driving large fasteners. The impact driver is built with the user in mind allowing for easy one-handed bit changes and improving visibility in dark work areas.