Its clear that the new breed of Yamaha’s SX series keyboards represent an upgrade in quality from the previous PSR models. So, why does Yamaha insist on continuing the PSR label in their name.

No one is going to call it “the PSR-SX900”, there going to call it “the SX900”. It’s easier to say and it differentiates it from previous incarnations.

Time to move into the 21st Century Yamaha. The product has...but the title hasn’t.
The “SX900” works much better. (MHO)
jingleman