Gary, if somebody GAVE me a Tyros 5, I would just sell it and get something easier to move around. I will only be getting a 61-note version of anything I might get.
The Korg PA4x is outstanding size and weight for a top of the line arranger.
They really didn't demo many of the sounds I'm interested in. I know Yamaha has an outstanding Pedal Steel and Korg doesn't. Maybe the 4X will.
I'm interested in electric guitars, saxes, piano, organs, fiddle, harmonica. . . more or less in that order. Both brands have really good acoustic guitars. Piano on either is fine, as is organ, strings and harmonica. Electric guitar still go to Yamaha, but I have heard snippits of some really good ones in the 4x.
It's fun to speculate.
At this point the operating features, ease of setup and transportation are more important to me than sounds, and Korg is WAY better for my needs. Yours may differ!