Altra continues its dominance in the trail shoe market with its latest update to the Superior model. Version 4.0 is a major jump from 3.5, with many notable changes. The first big thing is the weight. Altra dropped 2 ounces with this latest edition, making it the lightest trail shoe in their lineup. They also made a major change to the midsole, moving away from Abound to something called Quantic, which is the name for…