Hi jwbassman
I'm going in the opposite direction - I loved my SWR rack, (90 lbs cab and 30-40 lbs of pre/pwr amp). It always sounded good. But, I really appreciate the newer lighter stuff (EA esp) and don't use the bigger rack gear unless its a tour/big venue and there's plenty of people to load the van or its a really important recording where someone might appreciate (or even notice) a better sound. Whenever I've used the sansamp for recordings I've always been very impressed, in fact surprised, that it performs so well. People think of it as a fuzz box, but it can be more subtle.
Enjoy looking for your solution - there's a lot of good rack gear out there - I'd recommend the SWR Grand Prix (very clean), any age of Alembic F1X/F2B (warm as toast) or the Trace GP12SMX. All great and sometimes available on evilbay.....or here?
BB