I don't think you can go wrong with either M2 or M3. If you are definitely going with a sub I would lean towards M2s unless your room is big enough to need the M3s.

The M2/VP100 choice for center depends on a few things :

- distance from speakers to listening position -- M2 is a fantastic center at 8 feet, 90% as good as VP100 at 10 feet, go with the VP100 past that (very roughly)

- magnetic shielding if your TV is CRT (I forget) -- VP100 has more shielding than M2/M3. Sitting an M2 inverted on a CRT TV gives a tiny bit of fringing -- lying down, normal position or beside the TV gives you scary bad fringing

JB

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