I have a Tone Tubby 12 alnico hempcone, a 12 TT ceramic hempcone, and a JBL K120 reconed by TT with hemp in a couple of 2x12 cabs. I like the TT's a lot. They do need to be broken in, though. If you're looking for bass, you might want to check out their Tone Tunnel round bass cab (yes, the cab itself is round!) I believe it comes with either four 10s or one 15. It's on their web site.
Bill, tgo