M22s perform very well near a wall--pmbuko used his on full metal brackets and reported better bass extension than sitting on a shelf farther from the wall.

I don't really see the point of using VP100s vertically (on end)--their bass extension will not be as good as the M22s, the cabinets are larger, and they're not designed to be used that way.

I am the Doctor, and THIS... is my SPOON!