i've replaced all my speakers so far except for my sub. I have the Rti150 in front with the Csi40 center channel and the Fxi50 for the surround. I can get the velodyne CHT12 sub for about $250. I wasn't looking to spend to much money and this fits pretty well into my budget after getting all the other speakers. Last thing i don't want to do is finish off my system with a mediocre sub. Can i just get some opinions on this sub, cause i see a lot of people here like svs.