I did use the R-52C and did sound pretty nice to MY ears. I elected to replace with psb Imagine XC. My other speakers are Klipsch with subwoofer.
I went back and forth with the R-52C and the PSB center, about 3 times. The Imagine XC sounded a little better to my ears. Maybe because the XC is a little more neutral? The RC-52C is in an enclosed cabinet, thus can be up against a wall, if need be.
My basement HT is 5.1 in a room that is 12 X 10. My wife has her own TV listening area, the living room w a sound bar, which she prefers.