Well, I never was a piano player, but even more important, I have fairly severe arthritis in my right wrist. I play 4-6 hours every night. I wouldn't last a week with a heavy action. The G70 and SD5 are even a little stiff for me, as good as they are.
Probably G70 would be the best overall action if it weren't for the pain. I'm against pain.
The Kurzweil sounds great but is probably overkill for what I need.
I'm off to shop now!
Thanks,
DonM