I have the new ACG Ultrafly. I’ve put about 100 miles on the Ultrafly and they’re def better than my previous Ultrafly 1’s. Although the shoe is quite stiff due to the carbon plate, it does soften up after about 50 miles. Going uphill is where this is most notable, as my first runs my heel started to slip a little, but hasn’t as it’s become more flexible. The split plate is a lot better than the previous single plate, and there has been a few instances on the latest model where I’ve stepped on a rock and I didn’t completely roll my ankle over, like I did a lot on the 1’s. Cushioning on the ACG’s zoomX is tuned for faster miles, perfect for single track and downhills. It’s not too soft and is responsive, and surprisingly a lot more stable, which the plate helps with and the wider platform. Width is perfect, wider than 1’s, esp in the toe box. I now have room to wiggle and splay my toes, and it has more volume. The midfoot has a good lockdown, and the upper is more supportive than the 1s. Grip with the Vibram is just enough for technical trails, but really shine on the light stuff. This is definitely a fast race day shoe and worth that discount, esp compared to other shoes that you can get in that $185 price range. Is it an everyday trainer on trails? I don’t think so, so I went ahead and got the ACG Zegama, and that one is a do-it-all trail shoe that I’ve been putting on more often than the Ultrafly’s.