Currently running a GB Shuttle 6.0 w/ 8ohm 410. Room to expand on that later (maybe a 115). Meanwhile, local music store has an old superbass lying around at a nice price. Buying it, is really an inevitability since I have been after an all tube amp (or "shinkuukan" as they say here) for a while. I lead w/bass in a stoner rock setup and want to add that overdriven tube crunch to my tone. I don't need the Superbass for bass, since the 6.0 has got that covered. I want the superbass just for added volume and distortion (and to use on it's own in more intimate settings). So what kind of cab would suit this setup best? I'll be splitting my signal into two amps. Any advice?