I always thought the PSR keys were a few steps behind the Tyros series, which led me to believe that even Yamaha considers them to be of a lesser build quality. They put the better action and stronger keys on their top line gear. I like light and fast, but I never liked the PSR "feel". I could own and get used to a Tyros if it had built in speakers and triggered chords like the Korg does, but in it's present state - I am not a contender for a T-anything.