I am receiving my PA800 this coming weekend and can't wait to see what it can do. I am a little sceptic of the OS. But, since I am familiar with the Korg Triton OS this shouldn't be that harsh.
I watched almost every single demo there is of the Pa800, and so far it is passing with flying colors.

As a 12 year Roland user, I will take my time with the PA800 and then post my likes/dislikes.

@ zuki,
I might need some chemicals to get me through the nights when the pa arrives!