whether this helps or not - I had a PSR 3000 which I purchased brand new a few years ago when they came out.

It was years ago but I still notice the better build quality in the PSR S910 keybed over the 3000. The keys are much stiffer and less flimsy than what they used to be.
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Yamaha PSR SX900 / Roland G70 / Roland BK9 / Korg PA700 / Roland GW-8L / Roland Fantom O6