Running AB'd amps has some great advantages. When not running in stereo, I run a pair of AB'd Peavey Classic 50's, both in the lead channels, just dialed up different.
I never really have any problem finding the sound I want. Making it repeat from day to day is a problem. Twice the gear, twice the fuss.

Sounds like you're looking to add a gain monster. If you can afford a Bogner, what the hell. Buy the Bogner cab and not something else. The 5150 is similar. Check out the Peavey Satriani's as well.

If you're really in to point-to-point wired amps, check out a Soldano or the Dr. Z's (although the Z is not as wicked).