I own the 24v Dewalt HammerDrill, it's a monster, heavy to lug around, but wow. That thing can do anything, I have on several occasions dragged it around on hotel construction sites with a 1" auger bit (18" long) and drilled holes through the studs in every room, on average it will eat up about 20 rooms on a battery charge. I've used it in hammerdrill mode to punch through 2' thick reinforced concrete walls in a prison for wiring up CCTV cameras, think the biggest hole I've made was a 3/4" through 2' reinforced, that's with one of those 18" long 3/4" diameter concrete bits. I've actually melted the smaller concrete bits using that thing. It can and has drilled through marine containers and 6" thick solid steel walls on ships. These things are amazing, just to give you an idea of how much power this thing has, the batteries contain two fans to push / pull air through the cells while you are using it to keep their temperature regulated. The charger that comes with the drill will recharge the batteries to full from dead flat in about 35 minutes. Oh, and I haven't mentioned the torque that thing has yet. Once while I was drilling overhead through a 4"x12" wooden beam with that 1" auger bit, I managed to snag a nail. I weigh about 260 lbs (120kg), when that drill hit that nail, it spun around and whipped me off the floor and had me hanging suspended from the ceiling about 8" off the floor even after I let go of the trigger, I had to put the drill in reverse to let myself down. Now that's torque!
I don't know much about their 14 volt, I actually owned the 18 volt for a little while and I didn't really care for it that much.
If you're going to purchase a Dewalt, go for broke and get the big'un. The $400 pricetag will set you back a bit, but I haven't found another drill for the price that could go anywhere and do anything "off the grid" like that one can. I haven't heard of the 32 volt one, and can only imagine what it could do, but I will be in line to purchase one when they go on the market.
-SunRunner-
