Those two keyboards are two different type of arrangers.
They both have their good and bad points.

Perhaps to biggest difference is the number of keys and the keyfeel.

The PSR 3000 has 61 keys where as the SK880 has 88 keys.

If you are in to playing, the SK880 would probably be a greater plesure to play.


Other than that difference, there are a few more differences but not that big of a difference between them although with the SK880 it has more workstation features than the PSR 3000.

If you can give some information as to how and what music you play and what features are important to you, probably we would be able to help you more with your dicision.