Do you have the need to get any other cordless tools that work on the same battery platform like a recip saw, circular saw, grinder, etc.?
If so, Makita 18V Li Ion would be my first choice. They've been bringing a few new tools since they originally introduced the line. If you go this route, make sure you buy the 3.0 Ah battery packs for longer run time.
DeWalt offers the most tools on a battery platform at about 30 that are compatible with the 18V NiCad system. For basic work on the house, they should last forever. Take a tour of commercial job sites and you'll see mostly 18V DeWalt tools - at least in my area.
Milwaukee and Bosch are a step up from DeWalt in terms of long term durability of the tools since they tend to have metal gears and chucks. The nice thing about Bosch is that if you register the tool with their ProVantage Warranty program, you are upgraded to a 3 year warranty that I believe covers the batteries. In any event, you can order new batteries factory direct during that 3 year period at a discount.
A lot of people like Panasonic, Metabo, and Hilti cordless tools. They're top level tools but that quality comes at a price - almost definitely more than your $200 cap.
Whether you're looking for extra tools or not, definitely consider an impact driver. Driving screws becomes a walk in the park. I use my impact drivers more than my drills. The one thing to keep in mind is that an impact driver doesn't have a clutch so it's real easy to overdrive screws until you get the hang of it.