I have RBH Signature SI-760's for l/c/r, and RBH MC6-DB for surrounds. I don't think they suffer a performance hit at all. There are tons of brands out there. I listened to Sonance, DefTech, Atlantic Tech, Phase Tech, Elan, Focal, B&W, and a few others. My favorites were the Sonance, AT's, but I got too good of a deal here on AH to pass up on the RBH's. They were heads above the rest.