As for my reviews, i can say that both boards are build in excellent and almost identical shape comparing to the original, some minor differences in construction and dampening, although my original is 20+ years old, so its hard to compare in exact way.
4872 is a harder prototype which is obviously stiffer build and heavier, testing were in very hard spring pack, no freshies unfortunately by that time. Boots were UPZ AT8, which is my softer setup for powdays. Yamifumi said its crazy to use this pow board in such conditions, ohh well, I wanted to try it anyway.
I am 6.5, 225lbs and the board felt very good for my weight. On the groomed trails, U195 felt more of GS board with wider turns vs the Undertaker as more of freecarving board with shorter turns, not sure if its good or bad, more of a preferred way of riding.
The nose felt amazing, no rattling at all, just amazing stable ride, great hold on any speed.
Same with the tail, I was so surprised by it, very jumpy, lots of feedback, very “alive” tail. I was not scared to press it, amazing since its a swallowtail.
Midsection of the board is probably too stiff torsionally, which would be hard to maneuver in the trees, well no trees riding yet, however its not an issue on the hardpack. I had to adjust my technique and get used to the board to feel and ride it comfortably.
Overall with only one day of riding on it, I would say its more of a carver than powboard, way better on hardpack than Undertaker, great grip to ride anywhere on trails, will see how it will ride in deep snow and trees.
Short video: