I will opt for BAT VK3i if you are looking for stereo tube pre amp, Audio Research LS 3 is a good match for Bryston amp too. The New McCormack RLD 1 and the Conrad Johnson PV 12 or 14 are not bad choice at all, depends on if you need the remote control.
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