What have you got in the rear of your 7.1 setups? I have the m22/vp150/qs8, so what would best.

Please...
I know someone has to have the full 7.1 set up out there. What have you got and how much do the speakers get used during any given film? I have just 10 more days before I move into my new house with a 11 wide by 20 long room. So in these 10 days I am going to get the final two speakers and maybe an amp or just use my old low end integrated Luxman amp. Basically...I do not want to spend the 400 on a pair of M22 and would like to get away with less speaker like the M3 or even M2. Any opinions.
So far this forum has been awesome...especially with the listening material. So what do you know, especially in maple?