OK, so I am home and now have a dilemma (and to be fair it's a good one).
I measured and the M5's will fit no problem, so ready to order. BUT then I also measured for the QS10 which I didn't think had a chance of fitting, but they will! I even have clearance from the budgeting committee. The problem is I can't do both. So which do you think would benefit my system more:
1)Front LCR of onwall M22/M2/M22 upgraded to all onwall M5's or
2)Replace 4xQS8 with all QS10
My HT room is fairly small and my 7.1 setup is probably overkill but I love it! So, the surrounds are not that far from seating position but they are at proper height.

Dan
On-Wall M5HP LCR, QS8 & EP500 in 7.1