I have used these for a season and change now. I am 6'2" and about 200 lbs and the 30 inchers work fine for me. I have used them on an overnight backpack/snowshoe/snow caving trip and they kept me afloat pretty well. I think the 35's would have been a little more supportive of my weight and pack, but these are what I have and they did the job. I use them mainly for getting out and enjoying the Utah snow for a day. Bindings are awesome; I have no trouble staying in them. They can be a bit tricky getting of when your hands are cold and they are snowy but besides that I have no complaint.