Ok so after all this time maybe some confusion; in the title OSX may not mean MAC to the windoze people. I did try the 99euro upgrade but when I got to enter my serial number from my original Mac disk it won't take it. That was good, because would have purchased the WINDOWS version which I can't use.
Anyway, to close out this thread, the OSX/MAC version at $125 is the only way to get the Aerofly 8, so I will purchase that.
Thanks