I would still get the HBE with your mod work, it sounds really good with the gain turned down to around 10:00 and the Master up a ways... The 'KS' mod is cool since it has different characteristics just between the switch/input selections and it's all VERY responsive to the Gain setting. I still can't decide which one I like best. I keep changing my mind at each gig.... But one thing, though: I keep edging the Gain down a hair on each mode or input when I'm playing it loud. You don't need the Gain dimed to get great sustain or chunk.
Funny, but my C45 switch works with the HBE input/mode and I think Dave told me it really wasn't intended to do that very well.... It's CRAZY TRAIN gain in that mode and I don't really run that config live, but in my jam room, it's purty cool! One thing ALL of the KS mods do VERY well is clean-up with the gtr vol pot! It's amazing how it both cleans up and gets BRIGHTER with the volume rolled off! Amazing shit!