Man, that PA50 has some terrific sounds and styles in it. I had one once and really liked it, but agree that the OS in Yamaha is a bit easier for live play.
I bought the 50 at GC and returned it almost 2 years ago. It stills sits on the shelf at that store. No wonder these stores don't stock upper arranger models.
I would definitely add that to my 3K setup.
zuki
_________________________
Yamaha 920 / Yamaha Stagepas 100 BTRs / Senn e935 - LIVE
Roland RD 2000 / Tascam DP24sd / ATEM switcher - STUDIO