Have never operated a 580, but have spent many hours in a 575. Just by looking, I can tell you the 8010 has a far superior cab. That being said, I personally like the 500 cab over the 2388. After a season of operation of any combine, any other combines controls, and sights are goofy. No matter what color your in.......Vise, versa.
Not sure if you do corn, but if you do, and have rows narrower than 30", for some reason Claas can't figure out how to put poly on narrow row corn heads. This is why one guy I know thinks the lexion corn head is junk, we run a 12-30 Lexion corn head on the 575, and an 8-30 Case (New Holland actually) on a 2388. They both do a great job.
Are you talking 90,000 dollars US money??? If so, Id think your crazy to spend that much more on an 8010. Unless you have really bad service from the class people.
Just saw an add from a dealer in Missouri selling a new 8010 for 187,000 USD. Must be a bare bones machine? Local Deere dealer sold a used 4-wheeler (425hp) to a guy in Brazil. Shipping from here (200 miles south of Canada) was roughly 30 grand. Hope this helps.