There are an awful lot of good options in this price range. I'm using M-Audio BX8D2's with great success. There are apparently some complaints about a buzz/hum problem from the tweeters, but mine are dead quiet until you put your ear within an inch or so of the tweeter (I use good quality RCA to XLR cables from 'SignalCable' if that makes a difference). I especially like them at the price (I paid around $360 for the pair).
I bought them mostly because I don't want to use a subwoofer in my computer system. They really have a nice clean, punchy bass. They aren't a one trick pony either. I've been very surprised by the quality and subtlety of their presentation in general. Imaging and soundstaging are very precise. With proper placement, the soundstage extends slightly beyond the speakers. Installing a set of Auralex ProPads helped to tighten up the bass even more, and helped to clean up the entire presentation up into the lower midrange. Helped to add a bit of focus as well.
I also have a Pulse X on order. Can't wait to run the monitors fully balanced when it shows up, I already have a pair of balanced xlr cables ready and waiting!
i just got the mopads they seem good enough, couldnt figure my self spending $150 for something like that lol.