Chalk up another for the M22 VP100 recommendation. Have you considered a vertically orientated M2 for a centre? Depending on your room size it could be a really good option.
Oh and since you're on a budget (like the rest of use), I would suggest using the Factory Outlet for 10% regular price.
If you order 5 items (like 2 M22s, 2 QS8s, and 1 VP100) you also get an additional 5% off. your total for the above would be a cool $1083. Just keeping your options open
The price for M22s and QS8s (running a phantom centre for now) would be $910 USD.
http://www.axiomaudio.com/factoryoutlet.htmlYou know you wanna!