well, normally for the surrounds, you want a speaker that has enveloping capabilities. in other words, it can spread and dispurse the sound, which adds to the feel of the desired surround effect in movies. but, you can use the direct, or front firing speakers, and be just as happy. its really a matter of personal preference.
dependong on the size of the room, if you have the cash, go with either one of the QS series surrounds.. or, go with the M2 or M3 as well.. to me, having the M22 as a surround seems like overkill, but once again, it depends on your preference. whatfurrer(who is a regular in the forum) has M22's as his rear speakers, and loves them.
there is no right or wrong, only what YOU prefer.
bigjohn
