I have both the SVS and the HSU and have been running my own comparison. I have had limited time to really run these through the paces since I have been traveling alot over the last few weeks. So far, I am having trouble deciding between the two. I have also been playing with various positions in the room. Either way, it is hard to go wrong with either brand. I will end up keeping one in the HT and the other in the family room. I will probably have a few friends come over and get more opinions.