Product review (5 stars): Best item of its kind!
I have a Dremel 7.2 volt Li-Ion rechargable driver.  It was OK for nondemanding applications, but any job that required more than minimal torque was more than the tool could handle.  This Hitachi 10.8 volt driver, on the other hand, drives 2 inch and even 3 inch screws into studs without a whimper.  I haven't used it enough yet to get a feel for battery charge longevity, but it does come with 2 Li-Ion batteries that seem to charge pretty quickly  with the included charger.  It is very ergonomically designed and comfrotable to hold and use.

I think Hitachi makes some of the best power tools on the market nowadays.  They are not the cheapest priced items out there, but if you want quality and dependability, you need to at least consider Hitachi before you lay down your money.