Welcome to the forums!
I am assuming that you have read Doug Schneider's review of the M2i?
I think there are a few that have auditioned the M2 versus the M22. The M2 should be fine if you do not listen at exceptionally loud levels. Also, you will have to cross over the M2 at 100Hz to get up in volume but no lower than about 90Hz. The M22 can be crossed over at about 80Hz. Without auditioning the speakers yourself, it is difficult to say what would sound more clear.
I had a chance to audition the VP150 and I would say that it has an exceptional off-axis response.
Definitely love the Marantz and I think it is a great match for these speakers.
