Yamaha PSR-S910 is direct successor of PSR-S900, with super bright LCD screen, MP3 player, new SFF2 styles support and additional (more modest) voices and styles.

I'm researching some Yamaha second-hand prices @ Ebay. Take a look if you want to buy/sell one:
http://www.yamahaforums.co.uk/forum/v...

PSR/Tyros repairs:
http://www.jeomax.co.uk