To the OP I had the M2's and a SVS 25-31pci and I felt I was missing some of the upper bass/midrange, moved up to the m22's and still feel I need something to blend better with the fronts. I have been looking at either going with floor speakers (m60s)something I can X at 50 or 60hrz or the HSU Mid Bass module. If you are willing to strech your budget to 1k the MBM and a sub is a killer combo. I too was afraid that upgrading my $100 sony sub to the svs wouldn't be that big of a upgrade I was way wrong.
