Thanks for posting, Fran:
Almost too much data for one to absorb. I never see Roland gear at the big box store I frequent (infrequently) in Ft. Worth because their staff knows diddly about arrangers. LOL!
I don't perform and have stuck with Yamaha's PSR line because it's hard to teach an old dog new tricks. I got started with Yamaha because my original song-writing partner used them... still does. Minimal learning curve when changing to a new model... and easy idea sharing when co-writing.
You performers have an entirely different set of needs and it's great to learn about those things that make your stage lives easier (or more difficult) and be grateful I don't have nearly as many problems. This is such a great place to learn and explore.
I appreciate you guys (and gals) allowing old "newbies" like me to tag along.