Hi Ilija
9000PRO
1- I know it has better piano, but ask them if they upgraded the lame dance/techno kits. They are the same as in my PSR510.

2- They talk about better synth engine. Please ask them what kind of improvements they made.

3- Will you be able to EDIT the sounds from on the PLUGIN card, like the AN1 card. And then save them as Custom Sound on 9000PRO?
Also, what kind on interface will it have?

4- Any more memory locations for Custom Sound?

5- Are the Arabic drums improved? they were of very low LEVEL in PRS9000. Are there any new ethinc drums other than those latin.

6- Ask who designed the most beautiful arranger, and congratulate him/her.

KORG PA80
1- Ask them about any fine print. KORG is very good at it.

2- How does the synth engine differ from TRITON

3- Does the sequencer record/play sysex?

4- Will it be able to load TRITON sounds?

5- How's the custom style creation funtions?

thanks.