Hmm...I've actually never heard of the Mediastation. The keyboard looks like it has a lot of options and I'm sure its good...I guess it's just a matter of opinion?

I like both Yamaha and JVC - I've been very impressed with those two brands. As far as keyboards, I am sticking by Yamaha for the REST OF MY LIFE because they are the best. Seriously, I am that impressed with my Yamaha. But, since we didn't have any Yamaha tabletop speaker systems at my work, the JVC seemed to sound the best out of all of them
(even better than the Sony...)