It's kind of strange to see someone happy with the S900 action dare to call the G70 action 'wimpy'!
What would you use to describe the S900 action in that case? What IS the word for WAY wimpier than 'wimpy'?
The whole point of an arranger's action, even anything's, IMO, other than something that is ONLY used for piano sounds, is versatility. Not TOO light to play piano on successfully, not so heavy that organ and other fast sounds are impeded.
IMO, the PSR series excels for ultra light sound operation, although I would prefer a more rounded key shape to facilitate organ smears, and also a heavier construction to easily absorb such abuse (I have no doubt that my personal touch would break something on a PSR
), but it is SO bad for piano that you can easily hear the unspoken admission by it's users...
They would rather buy an 88 than use that action for serious piano use.
Trouble is, that kind of defeats the whole idea of an arranger... one keyboard to do it all.
If, OTOH, you are looking for a multi keyboard rig, I'm sorry, but the PSR action STILL fails, IMO. There are FAR better fast actions, there are MUCH better waterfall actions for organ, and there are great 76 and 88 wooden weighted actions to chose from.
Neither fish nor fowl, and yet it's users have the nerve to call a G70's action 'wimpy'!
The PSR series is so far beyond 'wimpy', words fail me! But if you have myasthenia gravis, perhaps it's the one for you!
You may indeed argue against the G70 being the best all-round arranger, but knocking the action almost universally praised by most, even by those who don't like the arranger itself
, is a stretch at best.
If you need to play piano AND organ from the same keyboard, and do both to the best that can be achieved, given that a compromise between these extremes of actions is obligatory, you can do no better than the G70's action...