Diki, Donny and several others here have said over and over again, the "new" instrument is not going to magically turn us into much better players.
I pretty well have to have the latest arranger because of my job, but I'd be perfectly happy with a Tyros2, or an S900/S910 for quite some time...years probably.
Playing a Stagea is an abject lesson in discipline, practise, arranging and creativity, and would require quite an investment in time as well as money.
And as stated above, you're getting 2004 technology...alright if you plan on doing the things I stated above, but not so good if you think it will be the magic bullet, and suddenly blow away all arrangers.
Spalding's posts on another thread that show players using the Tyros2, and G-70 to another level, make it clear, at least to me, that it is the talent, creativity and dedication of the player that makes these instruments speak so well.
Ian
_________________________
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.