Thanks for all the positive encouragement guys! I think I am def going to go with the M60's. Also think the fire place is going to look great flush up against the wall with minimal trim.
HOWEVER, I am a little concerned about how far the center channel is going to be sticking out. The speaker is 7.5 inches wide, I will be putting a false wall up so the fireplace will sit flush, but the wall will only be 4" thick. I could make a cut out for the center speaker, but I still will have 3.5" stick out above the fireplace. Although I think it might be even with the TV anyway, you figure the thickness of the TV, plus wall mount, it will easily be over 4" from the wall, so the speaker will be even with it.
Just wish I could mount everything flush, but the chimney is preventing me, only have 4"s of depth with the false wall before hitting solid brick. Ah well, should still look good!
