Welcome, Wisk. I'd also suggest the M22s for your size room. If your budget is causing you to hesitate on getting surrounds, my view is that you would do better to instead delay getting a center speaker and let the mains do the center channel in "phantom" mode. The surrounds(probably QS4s)add significantly to the enjoyment of music even from two-channel sources. Using processing such as DPLII to extract the ambience naturally present(in varying degrees)in the two channels and steering it to the surrounds where it belongs is a benefit that shouldn't be underestimated.
