Marck,
regarding the *frustration* you had finding your way around the PA80......
I think your reaction can proablably apply to most of us who have gotten used to a particular vendors' OS implementation..... I've played Korg, Roland and Yammy over the years (among others, and not just their keys either) and find switching from one to the other amazingly frustrating.
I find Rolands keboards to be the most intuitive - i.e. the ability to sit down sight unseen and dabble with settings using markings on the buttons and menu info - with Yamaha being the LEAST intuitive. Remember.. IMHO..!
Once you get used to any format, navigating another OS (arranger or not) becomes a chore. A couple of years ago (I owned both Roland and Korg boards back then) I bought a Motif, right after they came out. Had it for 29 days and returned it.... couldn't get the hang of how to navigate/construct and do simple things like pattern play, midi file playback, and so on. I was thoroughly disenchanted. I've also had similr experiences w/ Yammy keys back in the EX5 days too... I did LOVE the keys on the Mo tho'... best on the market for the price IMHO...
Bottom line is - with all due respect to indivdual opinions - take the seller up on that 30 day no-questions asked return policy. You can REALLY try a number of boards using that approach. In your case Yammy works, in mine it didn't, but a few minutes of noodling in GC should not a bad board make [
]....
Steve