Good comparison, but the comparison can not make the final decision about which keyboard you want. The decision can be answered, when you know you. Situation change, and so must we.

My story:
1-Technics to Yamaha Psr2100.
2-Moved on to a Tyros 3
3-Moved from a Korg Pa800 through to a Pa4x.
4-Sold the Pa4x because of the weight.
5-Moved to a Yamaha S975.
6-Traded with a member – his Pa1000 for my Yamaha S975.
7-Just sold the Korg Pa1000.

I was trying to find what I wanted, but the situation had changed, I am now a home player.
If I were still able to play out, I with-out-doubt, would have a Korg keyboard.

Playing at home I am no longer interested how fast I can move form A to Z, but in the sounds of the instruments and the amount of styles for my entertainment, the overall clear quality has me sold on a Sx900.
Rikki starts with, “Who am I” and then makes her decision. That sounds like good wisdom.

As the years pass ears begin to hear less, mostly in the highs and the clarity. So, a Yamaha S900. I would follow Steve’s thoughts and own both keyboards, but that would bring confusion; I want to reach without thinking.

Thanks for reading, John C.