I use the RBH WM-24 as a center and surrounds with the wm-30 as LR.
I just got back from Watching Watchmen and one thing I noticed while I don't have anything like that for bass in my HT, the QUALITY of the sound is so much better. The wm series is so accurate and clear it's amazing that it's coming from something so compact. I can't speak of the EMP since I haven't heard them, but you won't be disappointed with the RBH especially at that price.
I've been thinking of picking up a couple of more to round out my 7.1 so I don't miss out on that price
