All of these products were tested in the resort and the backcountry to reduce variables for accurate comparisons. We repeated the same runs with multiple boots in succession to ascertain the subtle differences in each boot. We decided on five metrics by which to judge the boots and defined the criteria as follows.
Performance
We performed short, medium, and long radius turns on groomers to evaluate boot flex and responsiveness. In steep chutes and moguls, we judged articulation and flex as well. We skied different skis with varying construction and flexes, including the Blizzard Bonafide, Black Crows Corvus, Black Crows Camox, Elan Ripstick, and Nordica Enforcer.
Comfort
By using multiple testers per boot to compare notes on different foot shapes and opinions, we can speak authoritatively on the ups and downs of each boot's specific shape. Everyone has different needs with boots, but we wore each pair for hours, allowing our feet to swell and find the hot spots. We took into account the materials and moldability of the shells and liners to customize each product for your specific bunyons, er, needs. We cycled the boots each day so that none had preferential treatment in our lineup. Our standards aim to remove as much subjectivity out of a very subjective metric.
Materials & Durability
We give preference to polyurethane (PU) as a shell construction material and our next preference to Grilamid for its weight savings. This review is primarily for resort and mixed back/side country use, so we were not overly concerned about weight. PU is strong and excellent for reshaping and customizing the shell. It also has the best flex of materials available and is favored in racing boots worldwide.
Warmth
Again, this is a rather subjective metric that we depended on meticulous testing practices to remove as much variability as possible. By paying close attention to weather forecasts and temperatures, we rode each boot in similar conditions with multiple testers, aggregating our notes to rate each boot on its ability to stay warm in the coldest weather and ventilate in the hottest.
Extra Features
We gave special attention to features that contribute to functionality and safety. These include Grip Walk soles so that you don't slip in the lodge or parking lot, walk mode for ankle comfort while hiking or walking, quick-release cam straps, micro-adjust buckles, and other unique design elements. This is a low-weighted metric but worth considering for buyers who can't decide between two favored models.