right now, I am using the BHK 250's as I am trying to put more burn in hours on it, and it is getting better and better. I could happily live with this amp forever. I will eventually switch over to the SET as I think Magico sounds best with it.
The amps are powered by Monster Power HTPS 7000 Signature Series, rest of my system are powered by PS Audio P5. I originally planned to let go of this (HTPS 7000) when I got the PS Audio P10, but the P10 cannot handle my tube amps. The HTPS is a beast, it can handle my entire system by itself without a problem. I don't think it restrict the dynamics by any means.
I also have Mang Rod designed 2000 watts copper shielded isolation transformer (seen in the picture posted). Good too, but I now prefer the convinience of the Monster.