Pros: Super Snug and Comfortable
Cons: Hard to Remove Boot
My Lange RS120 came with what are probably really great Intuition liners. They were definitely warm but packed out on every run and I had to tighten them again. That takes extra time I could be skiing and sooner or later you are down as tight as its going to get. What ended up happening was some slight nerve damage on my left foot from tightening too much. Now I always feel like I'm stepping on a pebble. Also the Intuitions always fit wrong on my ankles and really hurt. I reheated them several times and the problem kept coming back.
I found a pair of ZipFits on sale in ENGLAND! They have cheaper prices overseas than in the US for some reason. So I had them shipped here. Man the improvement was so amazing. It was/is like my foot and the boot are one solid unit. My feet keep warm. I have Reynauds disease so my toes and fingers just get cold even if its 70 degrees. I use toe warmers but you might not need to. The rest of my foot is toasty because of the ZipFits. My ankles are easily dealt with now. I can simply move some of the cork into the right position and my ankles are fine. I have so much more control over my skis and my feet get tired a lot later in the day as each movement is more efficient because my foot is so well locked into the ski.
Taking off the boots sucks. The ZipFit has to come out of the shell then I can remove my foot from the liner. Some people might not have the same issue but I can not otherwise remove my foot from the shell. So its always an ordeal. Then I have to pack everything back in the shell. I remove my feet only when I need to warm up anymore.
Love my ZipFits.
Really, they are awesome.