I would say that you are at a good price point to get a complete HT speaker package from a reputable company. I haven't spent a whole lot of time listening to complete systems, but one of the better I've heard was by Velodyne.

http://www.velodyne.com/pages/productsp/Deco-pg.html

I heard these set up in a "high end" audio shop, run from decent equipment. They sounded better than any of the other "home theater in a box" systems I've heard before, but they were probably quite a bit more expensive than other stuff I've heard. I know the system can be had for under $1500, including the sub.

Jason