I agree that Frank is great. However we have different opinions on which is the superior keyboard.
As far as service, Yamaha is very good, but I've been satisfied with Korg service the time or two I needed it. Korg is active on the Korg forum, and they periodically give us free updates, styles, sounds, etc.
The current update is HUGE, almost like getting a new arranger in some areas.
I also much prefer the size, weight, touch screen, Songbook and live operating features to anything Yamaha has.
Different needs will dictate different preferences for sure!
There are no bad choices. That is, if you have enough money. I bet that new Yammy will be pushing $6,000.!
And I'll also bet people will be lining up to buy it. Not me. I'm happy as a rabbit in a turnip patch!
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DonM