I did a search on this topic but couldn't find any real threads devoted specifically to these subs. I've been thinking about it recently, and I'm not sure I'm going to need the balls-out performance of an SVS or an Hsu (I know, heresy!). I live in an apartment and I probably won't be listening TOO loudly. So, I've started to consider some more affordable alternatives. My dealer recommended the PDR-12, which he sells for $419 (before discount). I know Paradigm isn't exactly known for their subs (except for the PW-2200 and Servo-15), but it seemed like a reasonable price for something that I hope will be more than enough for me. Does anybody have any experience with these subs? If so, what did you think? I also just started looking at the Adire Rava. Any recommendations? And what are the pros and cons of sealed vs. ported subs?