I would echo the SVS or HSU sub recommendations. You'll find high praise for both companies all over the web (and typically very loyal fans to one OR the other). While it's nice to have axiom offer a sub that fits the set, it seems a lot of folks around here (who are diehard axiom fans regardless) went outside the brand to secure their sub.
The STF-2 from HSU is supposed to be a great clean bang for your buck sub woofer and retails for $399? I believe that would even save you $100.
Now that I've eliminated any chance of getting a package deal around here I'll pipe down
-Nick
P.S. Only jesting, one of the great things about this AXIOM forum is the open dialog about other speakers and equipment. It's why I come back.
