I won't have it for about a week yet and I'm still getting used to the 6500 and the X1. I think the 6500 is great and very realistic. It really brings out my songs and makes them shine. I was looking for a keyboard that sounded like the real thing and so far, the 6500 is fitting the bill. From what I hear the PA80, is going to have a new (3.0)operating system in December, so we'll see what Korg can do.