Remember the PA50 is still a current model so changing to the PSR2000 is a bad deal.
No Operating System is complicated, they are just different. It's like following a different route to get to the same place. All brands have different OS's and if you have become used to one OS all others appear complicated. All that is required is a little patience to learn the new OS and you will be rewarded. The PA50 is a great board.

[This message has been edited by Graham UK (edited 08-24-2007).]