What size room do you have? This is very important in your decision. My room is 10 feet high, but not very large in area. I started with the M3ti as mains to determine the quality/output of the speakers. OUTSTANDING quality, however, I did not think that they filled the room. Unless you are putting your system in a medium to small sized room, you may want to opt for the M22s. As for the rears, the QS line is supposed to be great. I have had really good results with the M3s in the rear though. Best of luck!