Damien, do you have a subwoofer? The M22s really need the assistance of a subwoofer. I use an EP500 but the EP350 would be excellent as well.

It's difficult to advise you on switching from M3s to M22s. The M3s have that little bass boost between 80 Hz and 150 Hz, which makes them seem to have more bass without a subwoofer than the M22s. I do think the M22s are more detailed and combined with a good sub, it's a combo that's very tough to beat, at least in average-sized rooms (2000 to 2500 cu. ft.)

Alan Lofft,
Axiom Resident Expert (Retired)