Just by looking at the formas they look like a solid boot, a little lighter than an average MX boot. It looks like a good option. The bilt discoveries have more plastic on the outside; the heel looks beefier just by the looks they are on the same level but almost the third on price. In boots I feel like you don't get what you pay for, it's more like high end audio it is a whole lot more money for a little better. The formas from the sounds of internet opinions are a solid boot, but so was the fxr when I got them. I want to look at the Alpinestar boot before I make a decision.