For several years I used the M60 / VP100 combination. With a little tweaking (like bumping up the center volume a bit), they were a very satisfying match. If budget is an issue, It may not be worth the cost difference to move up to the VP150. I recently upgraded to the VP160, and there is a very significant improvement over the 100.

I'd suggest going with the VP100 and saving the difference to upgrade your surrounds.

I started out with nothing & I've still got most of it left
M60 VP160 QS8 EP350
M22 VP100
Algonquins