I've probably played synths and organs more professionally than pianos in my career. I think that everybody is clouding the issue. This is nothing to do with how an arranger's action compares to a piano's...

It is how it compares to OTHER synth actions. There is a wide degree of difference between them, ranging from the excremental to the sublime. But it isn't a weight issue. It is a quality of construction issue. Without doubt, you are hard pressed to find ANYTHING in the S950's price range that has such a poorly constructed action. Gary makes a point to never invoke any other synth actions to make a comparison for his poor arthritic fingers (he probably hasn't played that G800 in decades... memory is such a poor thing!), and wants to make his point by comparison to a piano's action to cloud the issue.

But take that comparison away (there is only one arranger made with a full piano action, the Korg PA588, which hasn't been updated in years) and start to compare PSR's with their actual competition, and weight becomes moot. They are ALL lightweight actions. Just some suck, and most don't.

With such misguided loyalty as is being shown, I guess it's unlikely that Yamaha will ever seriously upgrade the quality of actions in the PSR upper end, so there's no danger of Gary ever having to eat his words, but I am utterly convinced that if Yamaha ever DID, and put the T4 action into a PSR, Gary would be the last person complaining about it! It isn't any heavier, it isn't any harder to play, it will put no more stress on his fingers than the current action. It will just FEEL good...