Just got back from six days on the north, south loop of Bishop Pass. I tried the Stratos and really liked them. They were comfortable, gave sufficient support for carrying about 35 pounds and the rand was good whenever I kicked a 1,000,000 year old piece of granite. I used my own custom footbed, which added a little to the weight. However, my feet never felt heavy, nor did I get any blisters. Pretty good after six days and three 11,000+ ft passes. The one downside is that the outer casing on the shoelaces blew in two and three days, making it hard to keep the tension consistent. I'll use them again when I get some new laces.