I absolutely love Paradigm's subs. I have two of the old guard, the long discontinued Servo 15a's and to this day they continue to go strong and perform wonderfully as my stereo subs. I also have the recently discontinued Sub 25 for my LFE channel which is just a whopper of a sub in a relatively small package i.e same size as the servo's. That thing has some crazy power on tap. Curse you Paradigm for discontinuing the Sub 25. You do bring up a good point about are they worth it because over the past few years the prices have noticeably started to rise but I still believe Paradigm subs should always be considered whenever in the market for a sub.The Sub 15 and Sub 12 are probably the sweet spots in the lineup now.