Testing Your Amplifier Experience/Recommendation

A challenge, not to mention my undying appreciation, to those of you with mucho experience with amplifier/speaker matching. I own a new pair of NHT 2.9 speakers. I need an amplifier, and prefer a tube sound to bring out the midrange in the 2.9s. HOWEVER, for various reasons I am looking only at solid state amps. I intend to drive them with a tube pre to be purchased once I decide on the amp.

I listen in a "medium" size room, to classical - both orchestral (Mahler, R. Strauss, Wagner, etc) and chamber; jazz - both electronic and acoustic; and various pop or latin stuff. So, from very loud, to soft.

I have narrowed down my choices to the following, and your challenge is to recommend one over the others, and why (and no, unfortunately I am not able to audition any of them without buying them first):

1. Audio Research D200
2. Marsh A200S
3. Bryston 4B-ST
4. Blue Circle BC22
5. Edge M6

Your recommendations are immensely appreciated, since without an amp, my speakers are rather worthless, and I would like to start listening again. That's more important than anything, but I would like to make a good choice.

Thanks!!!!!!!