Thanks everyone. The axioms pass one major test - community support - that's for sure.
I think I'll go for the M22s with the FMBs - need to talk to boss first on that one - I know she's real keen on having an inwall solution, but then again she doesn't want me punching any more holes either...
I'll flat mount the QS8s and if I need some FMBs later I will do so.
I am assuming the M22s are much better for home theatre than the M2s or M3s - are they just for music?