Currently I have r50s for my front speakers and monitor 30s for my rears. room is approx. 9x14. Onkyo 1610 is my receiver. Due to size limitations of my cabinet I was looking to get the rm8 as my center channel speaker but wanted to ask some advice as to whether or not it will match well with what I have know or is there a better one. I would rather not get a new cabinet but if I have to to get the best sound I will. Also, in a room this size listed above, is there really a need for a subwoofer and if so, which one. Thank you.