Thank you for your recommendations!

I've checked out those new ones. The DGX-620 is priced at $1100 here, so it is a little more than I'm looking for. I have some questions regarding those "registrations" Is this like a songbook feature? Could someone elaborate? Can one add more styles as well? My DGX-305 can only load one user style, which was my biggest disappointment with that keyboard. However I like the light key feel. Even though I am a pianist, I play a lot of gigs, and the lighter feel is easier on my hands, and once you get used to it, it's quite comfortable. When I need a good piano feel, I turn to my trusty P250, which is the best piano I've ever played. But it's to big to carry on gigs.

I've tried a Casio WK3200, didn't like the styles or the keys, but the sounds were ok.
Is the WK-3700 or WK-3800 any better? Does it have songbook feature?

Doc-Z