I know that Fox has an agressive marketing strategy, and it seem to work if you rely on how many people race it, but i've tried em all, and i find the marzo is smoother. I even tried the BOS fork and it's a really good fork but it felt a bit stiff to me even though the dude who let me ride it is 20 pounds lighter than i am. He told me that it's the way they are. The Dorado is a killer fork too but it brings the center of gravity higher so i like my marzo better. The 40 feel like a big spring without damping to me. The adjustments are probably there just to make it look good because it doesn't seem to change anything.