My advice is to take advantage of their in home listening policy and order both the on wall and M22 bookshelf speakers along with both the vp100 and vp150 to see which setup works best for you and send the others back. It will cost Axiom money to ship back the unwanted speakers but I feel once you get them in your home you will be one happy camper. Personally i have heard on wall speakers and am not a fan, with the m22's being ported i see too much functionality of being a bookshelf. The above posters are WAY more educated on this topic but i wanted to offer my .02
