very detailed bookshelf monitor around $700 used

this theme has probably been beaten to death, but i'm shopping in the for a bookshelf speaker in the 500-800 (used) range for an office system. my room is about 10'w x 15'l x 10'h and i'll probably use a small sub. they'll be driven by an 85w/ch integrated and used 100% for rock and jazz of all types. my idiosyncratic criteria:
1. transparent, lots of detail, good imaging
2. good at low volumes;
3. unfussy about placement, as they'll be near a wall.
i've auditioned proac tablette, focal chorus/profile, sonus faber concertino, all of which have their strengths. your thoughts on any of the above, or anything else i should consider, would be most appreciated.
both the proacs and the quads are very intriguing (i agree with ryder that the proacs were more detailed and quicker that the sonus fabers, which are off my list). however, from what i've gleaned, both the proacs and quads shouldn't be placed near a corner or wall, hence they may not work for my set up (i'd need to place them within a foot or so of my narrowest wall). if anyone has a different perspective, please weigh in.
thanks all for the feedback thus far....
If you could wait it out you may find some very nice DIY builds under your maximum price. Some may even rival very expensive monitors found on here.
The Usher speaker line is excellent-good efficiency, great imaging and nearly full range sound that does not require a sub. Try the X718.
Green Mountain Audio Europa - not much to look at, but great bang for the buck.