As a long-term OG Pint rider, I'm loving this as an upgrade: the extra range makes a big difference, and the speed bump is nice also. And given the minor price difference between S and X, the S is definitely the way to go: the larger (curved) footpads are much more reassuring to ride on (you can feel where your foot is etc...).
I took this down some MTB tracks, and when the terrain gets rough it feels a bit underpowered - I can see why you might want to go up to a GT if that's what you were after. But for flatish trail fun, or a way more interesting commute, I think this is hard to beat.
Nice fast delivery from Twelve Board, thanks.