I don't chime in very often, but I wanted to share my joy with everyone over the SVS 20-39 PC Plus I recently ordered. Some background - I was using an Infinity Entra 150W sub with my Bostons; I used to think it was sooo awesome when you could occasionally sorta feel something in the 35 Hz range. Wow, I just didn't know what I was missing, did I? Even before I calibrated with the Radio Shack SPL meter and my Avia disk, the "Darla" scene from Nemo was pretty eye-opening (yes, I've been reading about your recommended demo scenes for a while). Post-calibration, I can't go any higher than 10db below reference in my little home theater room without the threat of foundation shift. I guess my post is two-fold; first to let anyone wavering on an SVS purchase know that you should pull the trigger, and second, that everyone's input on this site has been incredibly helpful in assisting a "noob" on researching and calibrating his sub. I think this purchase has made me feel one BIG step closer to having a Home Theater, and not just "a room where I keep my speakers". FYI - that Sauron ring drop from Fellowship EE? Felt like I was on an amusement park ride. No kidding. Thanks Erik - I placed my order the day before Thanksgiving and my sub arrived exactly one week later. That's pretty cool. Anybody wanna buy an Infinity sub?