I have been upgrading my system from its early htib phase to a respectable system, and right now the only old crappy speakers I've got are my surrounds. My room is small, I have a VP150 and M22s and am crossed over at 80hz. Would I be fine with the QS4s, or would I gain anything with the QS8s? The QS8s would be future proof, but I'm just a poor student and they cost a lot more, and I don't know if I'd even notice a difference.

M80v3s, M5HP, QS4s, M22s, EP350v3, Denon X3700H