I'll just throw in my 2 cents. I just got the M60's and the VP150, a week ago, and they sound great. I think you'll love them. As far as the surrounds go I go I have the QS8's. I don't know how the 4's sound but I love the 8's and I have a living room without a back wall. It ends in the dining area about 20ft back. The immersion of sound is fantastic. I have a feeling the 4's would get a little overwhelmed by the 60's, but again I've never heard them. Good luck, either way I think you're in for an eye opener. I know I've been spellbound from day one.
