What a difference a day makes. Well, in my case not exactly a day, but a few years. When I first got involved playing arrangers, my thought was gotta have a heavy weighted graded hammer action, based on that I bought A CVP 307. But the more I played in arranger style the less important a heavy action has become.
So I'm fine with a lightweight action, although I agree with Cass I think the G70 has the best action of an arranger. If I'm playing piano solo music, in my opinion you have to have the real deal, either a well maintained acoustic grand piano or a CVP with a graded hammer action.
I sold my Samick grand piano because I was tired of having the technician in 3 or 4 times a year at $90 per visit to keep the piano sounding the way I liked it.
The CVP 307 is excellent,never goes out of tune and for the amount of time I'm playing piano these days it works just fine.