Maybe you are right DIki. A korg pa-500 and a digital recorder are still quite cheaper than psr s-900 in Greece. Also the market at pro arrangers here is 60% Korg , 30% Roland, and 10% Yamaha. From the other hand I prefer making things that sound a bit different. I make funny songs that are quite popular at internet and many people will hear them.
Yamaha is also expensive here. psr s-900 costs 1600-1700 Euro , and korg pa-500 1050 Euro! !
I have heard samples by s-900 like Ian's arrangments too that I doubt Korg can create. Also Yamaha is very reliable. I use Yamaha 15 years since I was 13 and both keybords still work perfect. I don't trust Korg that much and I also don't trust touch screens!!
They will get me the s-900 next week to test it, cause I live in an island. And then I think must follow my heart!