I purchased S900 after hearing it's demos and previously i owned psr-3000 and it is somewhat better than s900.The s900 is good only for few SA voices and USB audio recording and better key bed.Overall the psr3000 sound is better than s900.I realized the importance of ps3000 after selling my s900.Now i'm getting new Tyros3.I don't know whether Tyros3 will satisfy me or not.

Sunny