Welcome to the forums, HockeyLifer.
I've been enjoying M60's and a VP100 in my large, open living room for about 8 years now. They are wonderful speakers, and you need not be concerned about them "matching".
Sometimes, people get fixated on "what is the absolute best". There seems to be some consensus that (everything else being equal) a vertical center channel speaker has "better" horizontal dispersion than a horizontal speaker. i.e. that an M22 sounds "better" than a VP100. That being said, not many of us can stomach the aesthetic of a vertical center channel.
The VP100 is a fine speaker. You'll likely be thrilled with it. Don't let people easily upsell you. My opinion is that you are FAR better off improving your subwoofer and surrounds than on upgrading the center channel.
