My only concern is if you introduce Axiom's into your theater, you'll have 3 different brands of speakers for fronts / center / rears. Hopefully they will all match each other tonally. Have you considered the Paradigm Atoms or the Paradigm ADP-170?

However the tonal matching of the surrounds to the rest of the system is less critical than the other speakers. So if you want to try Axioms, the QS4s do sound good, but the QS8s sound great. I've got 3 QS8s in a 6.1 setup, and they sound awesome. If your surrounds are going to be more than 12' apart then I would recommend the QS8s over the QS4s. If you don't mind spending the extra money then by all means get the QS8s and you won't ever wonder if you should have got them.

Jason


M80 HP v4, VP160 v4, QS8 v1 (3 in 6.1 layout), SVS PB12-Plus/2, Parasound Halo A21, Denon AVR-X4100W