It's my understanding that they actually improved the keybed on the semi-weighted digital/midi controller. I'm going to assume you're talking about the ProKeys 88sx.

For the price (if the keybed is improved), it would make a very nice controller as well as portable stage piano.

I'm glad I own the MO8 Although it's not graded action it still feels AWSOME!, and it's not only a great synth/workstation, it's a BEAST of a controller.

Squeak