Considering a fictual setup as following in a 7.1 environment, everybody agree that one of the best way to go would be:

2 x M80's -- Front
1 x VP150 -- Center
2 x QS8 -- Surrounds
??? -- Surrounds back
1 x SVS PB2+ sub.

NOW, for surrounds back speakers, people opinions differs widely. Some suggest another set of QS8 but some say that the diffusion is "too much" with the already QS8 surrounds and suggest direct radiating speakers like M2i or M3ti. Some say that putting 2 more QS8 would soud awesome but don't have any argument to say that it would in fact be better. Anybody can give their opinion of why they would put QS8 or M2i or M3ti as surround back? Keep in mind that using this 7.1 system would give 4 QS8 if you suggest to go with 2 QS8 for surrounds and 2 QS8 for surrounds back.

Thank you,

Sylvain