I realize what I am asking for might be like a comparison of the qualities between a Yugo and a Trevant, but currently I have two subs and I need to know which is the better of them. I have an RCA Pro SW 120 10" sub with a 120 watt amplifer and it is rated at 44-200 hz (in actuality it goes down further in the real world). I also came across an Audiosource SW 80. It is an 80 watt 8 inch sub with a 30-150 hz rated response. It is usually packaged as part of the Audiosource 380 system which is the equivalent of the Home Theater Direct Level One. The RCA is bigger and is built better, but I have heard a few better things about Audiosource. Please advise.