Hi, look at new Technics KN2600 too.

It is same priced than PSR2100, and it has with a great great plus: SD card. You may store a lot of Mb (for reg, styles, songs, audio!!!, mp3!!!) in this "little thing", and loading from it is very speedy, a lot more than from a floppy. It is like to have a Hard disk, or more, not only one Hard Disk, but more (all sd card you buy).
Afterwards, its key feeling is good, if you don't like it in PSR.

By the rest, you may read a recent review and comparison in this forum
http://www.synthzone.com/ubbs/Forum37/HTML/006798.html

Good look