belles 150hr is a very musical ss amp that is pretty much perfect in every meaningful way with the merlins i've owned, and could very easily end your search, if that's what you're looking for. its very close to the magical flow of a nice tubed amp.
but, if you're looking to be swapping gear alot maybe stay away from the belles, because you'll have to spend alot more monies to get any marginal improvement.
tubed ive found even more satisfaction with atma's otls, the m60 are wonderful, and the ma-1 magical with my vsm.
i believe you will have a hard time finding an amp that will not work well with your spkrs. also loads of info has been shared on the various online forums to help point you in the right direction.
have fun!
