The Polk 6000 has been out for a couple of years and has a bigger sub and more speakers than the newer 5000. I suspect the 5000 is the successor to the 3000/4000. There is also a new 9000 that looks quite impressive on paper, but will be above your budget. Last week i demoed a Klipsch SB 3 at Best Buy and it was musically the best <$1000.00 self powered soundbar system I've ever heard. Unfortunately it is also above your budget. As jroptop mentioned, you should be able to find a good deal on the Polk 6000 in the coming weeks.