My problem is like most homeowners. I don't use a cordless tool enough to justify buying a "good one". The batteries will go bad from lack of use. For a guy like me, if I were going to buy one, I would probably go with something like this:
http://www.harborfreight.com/18-volt-12-in-cordless-variable-speed-drilldriver-62427.html
There is no way I could ever justify a $360.00 DeWalt for what my needs are.
Same here.
I lucked up a few years ago and got a steal on a Craftsman kit: 18v drill and a sawzall with two batteries and a bag for $20. Regular price was $150. One of my d-i-l has kin-folk that managed a local Sears store and they were liquidating items that didn't sell at Christmas. My son got two sets for himself, one like mine and the other a drill/circular saw set.
I seldom have a need for it, but it is nice when the need arises. I try to charge the batteries regularly so they keep their life. Mine are NiCad and one of his uses Li-ion....the lithium seems better, but you never know when they are getting near depletion......they tend to just stop when it is time to charge, where the NiCads will slowly begin to weaken over time.
I have a 12v B & D cordless with a charger that plugs in like a cell phone.... just plug the charging cord into the back of the drill for a few hours. I probably use it more than any other drill (not often, but I grab it first when I need one) if it doesn't have enough umpf, then I grab the 18v....or a 110v corded drill.