I had an S3 before, and I was happy with it since I bought it, but the SK88 is 10 steps higher. The 32 traks seqencer, and the polyphony, solved everything I didnot have in my S3. Overall, it is the best all-in-one you can buy.
Comments About the Sounds:
(Thanks to Peter Bodea for this info.)
and Marijn Moerman for the pic