match amps ss or tube for proac 3.8 response

I am using the Audio research VT 100 MK II and love it. I was using the Bryston 4B-ST and found that the tube sound of the VT 100 is more to my liking. My pre-amp is a Audio Research Reference 1.

One amp that i regularly hear goes very well with ProAc is Rowland.

Another to consider is the famous British make Sugden-I have this combo but at a lower level-combining the Sugden A21a integrated amp and Proac Studio 150's.
You could perhaps consider the Sugden Masterclass series....