OK, if the PA3x is not in the running ... I'll go WAAAAAAY back to the 80s when my go-to rig took 2 hours to set up (ugh), a van to haul it and a youthful, strong back to load it all in:
Roland Rhodes 88 key piano with Roland D70 on top - SR16 or Yamaha RX17 drum machine off to the side and a midi patcher that made wonderful setups and patches between the 2 kbs. All run in stereo with massive powered stacks of Peavey speakers with subs and a powered hot spot vocal monitor.
My best rig in the 70s (when I didn't have to play bass) was the Clavinet D6 with a Rhodes on top (hanging off the back with the extender legs keeping it level) and an Elka string ensemble on top. Phase shifter on the Rhodes (of course) and an auto wah on the clav. (we didn't have a guitar player)

With all that said - I'm with Don - the PA3x replaces them all with no compromises, and gives me the best vocal processing I've ever had on stage, next to the TC vocal live touch (witch was WAY cool)