Don,
My pleasure !

Lee,

I bought the PA-500 and started with the factory preset Performances. I was literally tweaking for weeks, my wife hardly recognised me afterwards !!
Seriously though, do not expect miracles but there will be performances no doubt that you will welcome and others that will have no impact at all. After all there is no accounting for taste. And as I said, I added 150 existing styles, set of sounds and set of pads just for the hell of it...........
As to the O.S. I would not know cause all my stuff was converted for PA-2X by a fellow countryman who lives on the other side of Holland. But I notice that the PA-2X BKP file has meanwhile been downloaded 70 times and no complaints so far.
If you want, I could ask the person who converted everything which O.S. he is using.

regards,
John Smies
Holland