I'm looking for inexpensive bookshelf speakers.

depends what type of sound you are looking for. For the money you could do better than the B and W 602. The Acoustic Energy Aelite or discontinued Aesprit provide very open clear sound with rounded off top end and limited bass extension. They clearly benefit from bi-wiring. Can be had on e-bay for under your budget. The Quads are excellent but the finishes are unique (very glossy). The wharfedale is an excellent value. Not familiar with the others.

a used pair of Epos ES-14s would be perfect.

dynaudio 52,s are pretty are kind off sweet for the money,used 600.00...675.00?

Thanks for all your responses. You've given me quite a bit to think about and try to find and listen to. I really appreciate the input.

Eben.

Acoustic Energy Aesprit 300s are great speakers at a great price. They listed for $600 new, sell for less than $300 used and are nearly full range. I've used NHT SB3s, Von Schwiekert VR-1s and a few others. The Acoustic Energys were the best by far IMHO. Good luck.