I would also recommend the ProAc 2.5's, However, the bass can be overwhelming in rooms your size unless you have the capability to listen in the nearfield and have some absorbative furniture/acoustic treatments. Otherwise, save some money and get the ProAc 1sc's with a Sunfire sub. That's my traveling recording / monitoring system. Spectacular midrange and treble clearity and usable bass to about 40Hz. Add the sub, and you have a fantastic (and versatile) full range system for about $2300 (used).
best used speaker for around 2500?
tastes are jazz, pop, classical. I listen to digital (CD and SACD) as well as analog. The speakers will be mated to a Copland CTA301 tubed preamp and a Copland CTA505 tubed power amp- 67 wpc in pentode and 35 wpc in triode. required ASAP