I was really considering the Klim this year but at the show I picked one up and wow! these things were heavy. I love my current HMK's and they have held up well. I can tell you this, they seem to be the lightest boot I've found yet. Plus they have very good support and have a pre-bend in them, which for any of the rider forward sleds, works great. Good tracktion, very warm, good support, fairly watter proof (If you stood in 6" of water you'd probably get wet) plus they make Boa and non-boa. Check them out before you buy anything else.