Here is where you REALLY want to go on this issue:
Tapeheads.net
Audiokarma.org
Speakers generally are grouped by price, and generally the more you pay, the better sound you get. There is a point that paying more only increases the listening experience by a few percentage points. But I would look at very high end book shelf speakers, like Revel, Sonus Faber, B&W, I listened to the B*W recently, really like them, Paradigm Reference, I think spending $1500 to $2000 on a pair is really going to be hard to beat, I think its the Emporer’s clothes after that, but you could pay less than that if you bought on Audiogon.