Given that you have the space and $, go for the M60 package. I have both the M22s & M60s. If you step down, you'll be more susceptible to "upgradeitis". That means you'll end up with both sets...which, on second thought, just might be the perfect solution!
I agree with Joe's first two points, your first option, which on my first post here I recommended. This hits pretty much the middle of your stated budge. You will have more, and larger drivers energizing your room, I can't see how that would be a bad think.