Choosing the right Bryston amp

I'm not familiar with your speakers, room or desired volume levels so FWIW, I'v always prefered the sound of the 3BST over the 4BST.

When I ran Thiel speakers, I preferred the 4BST to the 3BST -- it just sounded a bit more natural and deeper to me. Hey, you can't ask a question on Audiogon without getting conflicting answers, eh? For full disclosure, I also preferred the 7BST to the 4BST. I noticed a significant change in the ease of presentation with each upgrade.

Ozfly, I'm not at all surprised that you prefered the 4BST over the 3BST with Thiels.

Well...maybe the Revels are comparable to the Thiels in that regard. If there are certain specs common to both, that is. You would know better than me.

I have a friend who runs a 4B-ST with the F-30's and will alert him to this thread.