Whats the difference?
http://cgi.ebay.com/10-93-UP-CAMARO-...QQcmdZViewItem
but Subthump > Ebay, sure
Now as far as fiberglass verus mdf or plexiglass. I think that's controversial. It depends on many factors. I've heard some sound very nice and some, well, they need some serious help. I think it's a matter of putting together the right combo of box type, style, and what speakers are going in.
Fiberglass is an *** ton lighter though
Or I guess you could always use birch, which is light and strong as well. 

