Hi Christian. I own the PA1X and i have also played the Roland E80. Korg are coming out with a new Operating system in december i think that will comletely update the PA1X FOR FREE. At least wait until we can review the os improvement before you make a final decision to purchase either the E80 , PA1X or ANY OTHER ARRANGER.

PS. I also didnt like the E80 inbuilt speakers but i have been told that you need to alter the speaker modelling set up as the default model is rubbish but once you do this it should sound much better.