What Preamp for Music Reference RM-200

Hi, I'm seeking advice as to what Preamp I should be looking for. I have a Music Reference RM-200 it is strickly balanced and I'm running ProAc Response 3 speakers. Music tastes range from Bach to Benatar. Personal taste in sound are deep layered sound stage,low level retrieval, 3D sounding, Involving. Any help along these lines will be deeply apreciated.
Just a couple thoughts:ARC REF 1/2,BAT,PASS Labs or Bel Canto.Happy hunting!
Tpsonic, Thanks for your thoughts, Yea I was hopeing some RM-200 guys would have dropped in with there comments about what they use. Oh well, I have something to research now.
Thanks again,