Max, I usually ran my M22s as large, so you are not alone, I just felt they sounded better to me. It could also be your sub isn't up to the challenge to fill in the room with good clean bass as I also fell into that category. I had an old sub that wasn't upto the challenge and I can now say the M22s with the PB13-Ultra(or any of the quality subs I have heard them with) sound pretty nice, just not as good as the M80s with the PB13\:\)

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70