Mike, since the S950's keybed is the same as S910/S710/S900/S700, and you didn't like any of the latter, I'd suggest going with a Korg PA3XPro, which will give you a better feeling keybed than the cheaper PA-series, 76 notes, and Korg's very simple operating system, which is so intuitive, a child could handle it after only a few hours.
Lighter actions were never an issue with me, as I have come from a synthesizer/Hammond B-3 background as well as acoustic piano, and I had no problems going from one type to the other, but your mileage may vary.
As DonM has mentioned, the PA-600 by Korg is eagerly awaited (I suspect Donny will sell his PA3X and get a PA-600), and also there is talk of a PA-900 (to replace the aging PA-800).
If I want real 88-note "piano" weighted hammer action, which I only need occasionally, I use a Yamaha P-95 as a controller for my Tyros4...it's pretty inexpensive, very lightweight, and the action is graded hammer and very nice indeed.
Good to see you posting again.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.