Looking for a speaker under $1000. used.

Hi Audiogoners, I'm looking for a musical, dynamic, involving speaker that images and soundstages like crazy, is easy to drive with a 40 watt int. tube amp. Room is 18' X 22 with a high ceiling. Listen to mainly male and female vocals, singer/songwriter pop rock at lower volumes. I've had monitors in the past,looking for floorstanders now. I'm in a remote area that has no hi-end dealers to compare. Any ideas?
Thanks, Jerry