Well, I had my brother in law pick me up sock liners on his way up from the cities earlier this year. The sales man at REI sold him the pair Mastertangler suggested even though I asked for the Cool Max. And he'd only sell one pair saying that's all I'd need. I used them on my recent 10 day in the WCPP and had no foot issues. Several times I got to camp with wet feet and was in no hurry to change into dry footwear. So I'm sold on the liner thing. The portages were not as long as my BW trip in May, but boot sucking mud and other challenges were the norm in WCPP. I hope to get out one more time to test them on the longer portages, but I'm trying to save for my Oct trip to the Phillipines. So we'll see. Thanks all for the input... How are these other boots like the OTC's and such holding up to multiple trips? My Chota's are showing wear, but still okay I think for another gruelling trip.