I asked because I see a lot of people in this forum who bought M2 or M3 for the 6.1 rear channel. I haven't heard to those speakers but I have the feeling that people buy it just because the rear channel isn't that important and people think M2 and M3 are great speakers based on the fact that M22, M60 and M80 are so good. If people are satisfied w/ M2 as their rear, would a crappy speaker be an good option to be the 6th channel?