Budget speakers for Orchestral music?

I'm looking for an efficient speaker (at least 90db) that works well with tubes and is ideal for classical music, from solo piano to large orchestral works. Oh, and they need to be under $1000, used or new. Any suggestions? What interests me is a lush midrange, I was considering Thiel CS-1.5's, but my amp is underpowered for them. Any other ideas?