Hi, I don't know how the 525 feels. But I just thought that I might mention, for whatever it's worth, that the "light" or sometimes called "semi-weighted" synth type keys are generally not standard piano sized keys but slightly smaller. you can check this by measuring say two octaves on a piano then measure the same two octaves on a synth type keyboard. You'll see the synth type keys are ever so slightly thinner.

Also to watch for is the the top of some keyboards black keys, when depressed fully will be nearly flush with the top of it neighboring white keys which are not depressed. I personally don't like this feel as I don't want to feel the top of the white keys. Most pianos black keys don't depress this far.

Anyway, best wishes on your search Oh and I agree Yamaha seems to have heavier keys than say Roland or other makers.... That's one reason I go with Yamaha. I like heavier keys.

Take care.
Bob
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