7.1 system - my suggestions.
Mains - M2 or M22 if you can afford them, better midrange then the M2 or so I am told.
Center VP100 - a very good if not forgotten center.
Side Surrounds L/R - QS4s or better still QS8s, a slightly better match for the M2/M22 as they use the same drivers but the 4s are excellent as well.
Rear channels if you are close to them, say less than 5-6', then QS4/QS8s depending on what you chose for side surrounds and if the distance is longer, another set of M2s/M22s as the sound will have time/distance to disperse and envelop you properly, yet will still hit you and let you know it is behind you.
