I keep a clothing log in a file on the computer. I keep track of stuff I've used, what works, what doesn't. Stuff I might consider for next year. Whats best at certain temperatures. I always refer to it the following year and has come in very handy. As for clothing. I went with Sport Hill cross country clothing (light and warm), who I found out at one time outfitted the Canadian Winter Olympic team. hiking boots for winter. Below zero I break out the snowpants and Neos's. For the hands I use Loki mittens. Top of the line.