Sorry that I gave a price range... lighten up. My roommates actually looking at that digital drive series from Velodyne. Cost really wasn't an issue but I didn't think subs went a whole lot higher than 1000. But in my experience in car audio, you get what you pay for. He might as well buy that...
What's a superb subwoofer that hits hard when it needs and is punchy or soft when it calls for it. Cost not really an issue but lets aim for the 500-1000 range. Maybe a bit higher if the cost is worth the difference.
I was just sitting here and about 15 minutes ago the sub in the other room, a 250w JBL just started buzzing and popping really loud. The amp, and old Kenwood 400w, and the TV, Mitsu. 65" HDTV, were all off. The sub is always on but never makes noise. I unplugged the Monster Sub cable from it and...