Hi there,

Are you dead set on an M sub? They are good but not as good as some analogue subs on the market from say, Velodyne, REL et al.

With regards to the 5200's - if you can afford them - buy them for rears. I would probably spend my money on a set of 5ks or 3100's an use the change for DVD's and CD's.

The general consensus seems to be that for Hi Rez music, matching speakers are/is the way forward.

Why not just get a demo and see what you reckon?