GB, don't stress over this! Unless it's fun to do so . As far as I'm concerned, you've contributed as much to bass amplification as Paul Tutmarc did for the bass guitar. I mean, I never would have found my favorite amp without your thread. And if I ever need another cab it's going to be a fEarful 15/6 (unless you come up with something better )! And you've done it for free! I say go with the most utilitarian design that you have and let those who have more particular needs learn the software and tweek the design.