Its my buddies, its a 2018 YZ250X, I am back and forth on it. Its not a bad bike, I don't love the handling characteristics, feels too rigid to me, kind of twitchy, cable clutch is fine, Nissin brakes are good, love the zippy engine, gearing is meh, forks are darn near the same as the Sherco, the bike definitely lights the tire up instead of putting the power down but parts have been cheap for it. If it was the only bike I could own, it could do everything I need it to, its plenty capable, my buddy straight up hates it. Everyone claims the YZs are super light but its 252 pounds full of fuel with the bigger tank, handguards, UHD tubes and a full length skid plate (clearly lighter than the porker Sherco but probably average for a kitted trail bike). SSS and AOS forks are essentially the same thing, Yamaha having a partnership with KYB they get the newest and best parts so servicing the AOS off the Sherco and the SSS off the YZ, I can't tell the difference, I think the Yamaha has a slightly bigger dampening rod? SSS is what Yamaha calls the AOS. If you could find a regular YZ for cheap and had to revalve or spring the suspension anyways, I think thats a better way to go than to pay the premium for a YZX, the gap from 2-3 is pretty decent and annoying. There was some year differences in the SSS forks but I can't remember the timeframes, I think the Sherco, Betas, TMs run the older AOS internals. I see dudes pretty regularly running the steel frame YZs in some of the nastiest stuff around here, I get a kick out of it but I am too soft and want my e-start.....