Bosch Tools Litheon 10.8 volt Pocket Driver —
Don't be surprised if you never pickup another drill to use around the house. I bought this on sale and wanted to really put it to the test while I could still return it. I bought 30 shelf brackets and some screws and hung everyone into 2x4s without predrilling. It does spin a little slower, but it didn't hesitate once on this tough project.
It came with half a charge and 40 days later it still has half a charge. I have a Makita 9.8v that I used for everything. But now I grab this tough guy. It is smaller, easier to use and it hasn't needed charged once yet since the day I bought it.
The only other small one that I would recommend is the Skil also made by Bosch.
Pros:
Small/Light Weight
Super Powerful (shocking)
Perfect for Home (medium work) use
Holds a charge!
Cons:
Price
Only takes Hex-Based bits (quicker, but don't lose them)