I bought a pair of OTB Abyss for a BW trip in July.  The first day I wore a medium weight polypro sock but after a few portages my feet were sliding sround a bit.  Fortunately I had brought the second layer of foot beds along.  They tightened everything up.  I've tried a lot of dry foot and wet foot boots in the the last 14 years.  I like these the best for tripping anytime its warm enough to get your feet wet.

terp