There are about 2-3 speaker packages in this price range, and even one below your price range, which sound great. If you really want the best sound possible, pick up a set of BA4800's. These will cost you about $139 but it's $15 out of your price range, and worth every extra $15.
If you really don't want to go over your budget, I recommend one of two speaker systems. Altec Lansing ACS56's sound really good and will cost you about $80-90 or so. This is a 4.1 channel setup and sound GREAT. Also, the ACS54's, which are the downgraded model from the ACS56's also sound really awesome. You can get them at
Directron for $45 plus shipping. This is absolutely the best value for the money. I bought a set for about $80 and I was willing to pay $100 once I heard them. These speakers also sound great, but obviously the ACS56's have the upper hand with a larger subwoofer.
DO NOT buy any speakers from Creative. Even their high end speakers sound like trash. The FPS1000/2000's sound especially horrible and I do not recommend them AT ALL.
Also, the BA790's recommended do not sound anywhere comparable to the BA4800's, the 4800's are far superior.
dm