In the <$200 price range I'd be looking at a Bel or a Whistler. I've been hearing some good stuff lately about the Whistler over at radardetector.net. I run an Escort X50, but that's a little more money. After everything I've read about the Cobras I'd stay away from them. Here's a decent test of a number of RDs:
Guys of LIDAR - Radar Detector Test - March 2007