I gotta say, I love you're 'go for it' attitude with new gear..!

I have to confess, I prefer to have ONE rig, that I use everywhere (and that to be just one keyboard, if I can) to having a variety of gear at different gigs. I would spend too much time going 'OK, how do I do THIS on THAT rig?' rather than just concentrate on playing.

The B3/Rhodes rig sounds great at a house gig, but I would probably want the same arranger for ALL jobs, otherwise you multiply the set-up work, creating registrations, organizing Music Finder databases, figuring out the best styles for each song on totally different equipment. Any time spent working out how to do the SAME song on different gear is time not spent setting up for a NEW one!

But I'll be very interested to hear how you get on with all the different OSs and features! The problem for me when using lots of different gear is the frustration that comes from NOT having the best features from each keyboard on ALL of them...