How many user styles can PSR2000 hold ?

If you have a style stored in the floppy, do you have to load in into the memory before you can play it ?

If you do, how long does it take to load a style normally ?

If you don't, does it take any time to link it directly ?

Thanks in advance
Shiral

P.S.: I baught a PA-80 a few days ago and dissapoited with its fill-ins. I am thinking about returning it and buying a YAMAHA (2000 or 9000). I am particulary interested in user styles. I appreciate your help.