Played a PA2X in Nashville, Dennis. Not into making stuff up just to sound good...

I'd be willing to bet that key for key, G70 is probably the heaviest. There's a difference between mass and sprung weight, IMO. The mass of the key gives a different feel to the sprung resistance THROUGH the strike. It's what makes piano actions feel different to synths. Springs give synths their primary 'feel' whereas mass does for a piano. IMO, the G70 falls somewhere in between.

Got a K2500, same kind of effect Heavier keys, different spring rate. Got a Triton next to that. VERY similar keybed to T4 (Yamaha FS rather than FSX action). I'll be playing a T4 finally, tomorrow morning (but have already extensively played the MoXS, with an FSX) and I'll make a point of comparing the difference. But it's pretty subtle...

To Ian, I'm afraid that, if you tend to confuse action, and sound and sound response, best thing is to try the action into another keyboard. My rig at home is set up so any keyboard can trigger any OTHER keyboard. That way, I can pick and choose what I want to play on, and 'feel' isn't influenced by sound.

Playing as much straight piano as I do, BTW, note LENGTH is quite important. I often have a problem going from piano to synths whacking the black keys inadvertently. Maybe if I were primarily a Hammond player, I wouldn't feel that, but short keys give me fits, except strangely, the Hammond's. Maybe it is because they are SO different, and I simply play differently?!