http://www.amazon.com/Black-Decker-...28&sr=8-3&keywords=black+and+decker+vpx+drill
This drill looks kinda cheesy, but it's my most-used out of 4 drills, because it's
very light and pretty short for having a chuck. I use it on the high setting for most of my case prep work. I bought a spare when I found out they were being discontinued. I got both of mine at $30.00. I use salvaged li ion cells from old laptop batteries. I've got enough to keep the thing going for decades.
Besides only taking a hex bit, screwdrivers are high torque and low speed. And unless you get a high end one, the bit often tends to wobble or even come out by itself.
If I were going to get spendy, I'd get something like this:
http://www.amazon.com/Hitachi-DS10D...&qid=1354595895&sr=1-11&keywords=li+ion+drill
I had the exact same feelings as you, on battery powered drills. But then li ion happened. Li ion batteries are not the NiCads of old. They're quite incredible. They hold a charge for a long, long time, and they don't self-discharge. So if you charged it a year ago, pick it up and it's good to go. Just plug it in AFTER you're done, and they won't be damaged by leaving the battery in the charger 24/7. The only minor annoyance with lithium battery drills is you have to take care to not leave 'em in a car or outside in the summer sun. But if you take care of the battery - for li ion, that means don't leave it completely discharged or in the heat - it'll last and last. So, yeah, li ion drills seem ridiculously expensive. But they're actually much cheaper over the long run and more useful than the NiCd crapola of the old days. My only corded hand drill anymore is a ~7 lb hammer drill. I bought it for drilling safe anchors in concrete, but these days it finds use mostly as a lathe, cuz it's so heavy and it has zero runout.
In fact, if you don't already have a good cordless drill, my gosh, that's a way more useful tool for the average reloader than a fully decked out case prep center.