I doubt you'll notice much difference for surrounds. I'm in the process of building a basement HT right now and purchased a Def Tech 7 (don't have the .1 yet) system. I was eager to listen to the new speakers, so I have temporarily replaced my PSB Stratus fronts/centre in the current HT with the Def Techs, but left the PSB dipole surrounds since this is only a temporary set up. It sounds great, even with the Def Tech/PSB mismatch. The most important match is the fronts with the centre channel.