Hi Harosha
First of all evertything that worked on the Pa 80 works on the Pa 1 xpro: plus you can play mp3s cds cdgs wav samples and sample. although I can't yet because the mp3 ex board is not available yet, this cd drive is the same as the other korg keyboards. The upgrade go for it you'll love the new styles and the voice processer is well worth it. Also transfering files is very easy from your computer to the Keyboard. I'v only got it a day so I too have a lot of figuring out to do but so far I'm impressed.
Applex
And no I don't work for Korg.