I am using a NAD T743 receiver (rated 5 X 50, 2 X 70). Now using the monoblocks for the front on M22s. I'm getting the M60s to replace the M22s in a day or two.
I think your right though about the samey bit but I do love to crank it though (at opportune times).
I suspect there may be a bit more punch and bass. I liked the sound of the NAD however. Maybe I need to let them play and try only the NAD after a week and then I'll see a difference.
I don't think this is a complaint, rather, a comparison. I'm overjoyed with my system.