Tuff question! If I were in your position I would audition the Plaxette Passive, Marsh P200T and Rogue 99. These are the preamps in your price range that I have heard and would recommend, but some of the previous posters have made some darn good suggestions also. Listen to as many as you can and good luck with your purchase.
Best Preamp for under $1750.00
Seeking recommendations for a preamp in the $750 to $1750 range. Balance of system consists of Aerial 8's, Bryston 7B's, and CAL CL-15. Room acoustics and speakers would favour lean over lush; I'm looking for something musical without being on the "warm" side. Music preferences include acoustic, jazz, and rock. Will re-cable according to final selections