Aragon, Parasound or Bryston


Trying to decide between a Aragon 8008ST, Parasound Halo A21 and a Bryston 4B.
My system consists of a VTL 2.5 preamp, Nad C542 Cd player, Paradigm Studio Ref 100 V3 speakers, Paradigm Servo 15 sub.
The three contenders come in at roughly the same price with the Aragon being just a tad cheaper.
Looking for opinions as I can't audition. I believe it would be easy if this were a 4B SST but that would be out of the price range so its the earlier 4B.
energeezer
Tubes ahead of the Bryston might be pleasant, they are forward sounding at times, I preferred mine on bass management which btw does well with. Having some experience with Parasound and Paradigm, they are a nice combination. Have not entered tubes into the equation but I dont think you could go wrong with the VTL in front of the halo.   
I would get the A21. I've heard it with your preamp and its a very good match. The 4B would be my 2nd choice.
Parasound is the most accurate,musical with great body and weight.Your move!!