Jim,
the smart media card offers faster access times. Also, although the smart media might seem more expensive, a 128 MB card can be bought for approx. $25.00 and it is the equiv. of buying over 100 floppy disks, so the cost is really not a concern. Also, you can use one little smart media card instead of having to switch between all those floppy disks.
The two keyboards are identical in sounds and features except for those things mentioned above.
George Kaye
Kaye's Music Scene
Reseda, Calilfornia
818-881-5566