So I've read that there is no such thing as "breaking in" for subs. But it feels like the longer I have the 350 the better it sounds. Tonight I watched HULK. I was finally blown away by the bass and crispness. I'm quite happy with the sub.... but i could see a potential upgrade in the future. Not for a while though.

PeachTree 65se, PeachTree D5 and SVS SB1000 - Stereo
M80s, M22s, SVS PB3000