Milwaukee Fuel drill and impact combo at HD. Comes with two large li ion batteries. I think it's the best stuff out there and I ponied up the dough for it and look forward to years of good use.
That Fuel combo kit is a great kit. At 399 smackers, it's also
allllllmost twice what he's looking to spend.
A lot of the responses have suggested corded drills, I'm just going to have to go with a modest "nyet" on that. Corded drills are great, I have two. The problem though is that unless one uses it a lot, they make really lousy drivers because they don't have a clutch. A really experienced user can feather the trigger and get fair results, but even so, most tradesmen will reach for a cordless first when it comes time to drive fasteners.
This Milwaukee M12 Fuel / M12 'combo' would be a good one. (Note: the deal is available from other vendors also).
You'll be hard pressed to stay under $200 for an 18v brushless drill/driver, much less a combo kit. In fact, I don't think you'll be able to find a 12v brushless combo for under $200. (Only the impact driver above is brushless). Easy to find, the 18v brushed drill/driver and impact driver combo kits from Bosch, Milwaukee, DeWalt, Makita are all good. A step behind them are Rigid, and Hitachi, perhaps Craftsman. (Yes, as a house power tool brand, Rigid is definitely a step above "Kobalt" power tools at Lowes.) Then Ryobi and Porter-Cable. (oh, the inhumanity of what Stanley B&D has done to P-C!!

) Dragging along hind teat are Skil (except the awesome Mag 77) & Black & Decker. The big boys (Bosch, DeWalt, Makita, Milwaukee) are easy enough to find at $200, each has their fans and detractors.
Go into HD and Lowes and fondle the tools. If they have the little demo bench set up, use it. Each tool will have slightly different ergonomics and balance. See which one appeals to you the most. There is no "best", if there were, the guys who make a living using these things day in and day out would all or most all be using 'the best'.