And the larger OLED screen is probably the main factor.
But, I'm having issues with the rail on two of my Switches. If this model fixes it, then I'll be upgrading... Unless Switch 2 is coming within the next year and is a proper continuation of the Switch... not a Switch U.
You don't say?
I got a Mariko Switch back in May as a gift from my energy provider, and I noticed how snug the rails were.
It is not dependant on the joycons but the rails themselves. Maybe we need to tighten the screws or something.
The rails in the OLED model look unchanged to me.