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It sounds like you are talking about what we sometimes call 'escapement simulation,' which is a little tiny bit of resistance at the point where escapement would happen in an acoustic.
I don't think Yamaha has escapement simulation in any of their pianos, including the high-end ones. I was only top Roland pianos for a long time. Now Kawai has it in their top pianos. AFAIK Yamaha has never used it. It's not really that nice of a think, in my opinion. I wouldn't pay any extra for it, personally.
They have triple sensor actions in the nicer pianos, if that's what you are thinking of. But that's not something you can feel.
Most has already been said. On the plus side for the GHS action is that it is still very durable and responsive despite its older, less sophisticated design. I wish it were firmer. I like how its basic features are grouped. I like several of its sounds. The speakers are surprisingly good for their size. I like that there is audio out on the back and headphone outs on the front. In its price class, its a good competitor for Casio PX-150.
Let off or "escapement" (misnomer) is also on all current Roland DP's. It's extremely mild on Ivory Feel-G and easily noticeable on all current PHA-III variations (I think there are only 2).
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