You will also notice the mismatched center when playing music. That is still where I find the biggest difference between matched and unmatched speaker systems.

I would add another vote for the M3 center if you can live with a vertical speaker. I have a VP100 and am really happy with it as well...

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8