Major difference in weight and versatility. For years I used a B3, Suitcase Rhodes, a small Korg synthesizer (don't remember the model number) a string machine I built from a kit (ugh), a 147 RV, a Kustom PA with a separate delay unit, a cheesy Multivox drum machine...no active eq, no monitors and two of the heaviest, almost square 15" cabinets.I've ever seen. That was an upgrade from a Shure Vocalmaster and those long multi-speaker colums and an echoplex.

Still, I miss old Jimmy Smith style playing,
and look back fondly at everything but transporting the stuff. Back then it was nothing for house jobs to last 5 or more years, so moving was limited to outside jobs.

I guess that's progress...

russ