I have used the OTB Abyss boot for quite a number of years.  In many ways it is ideal but, still, in the end, I don't like it.  I just find that it is too difficult to get on and off when wet (the laces coming undone was only a minor issue for me.)  Part of that is because it is a ¾ boot but I'm not convinced it really gives that much ankle support, I mean, the material is pretty thin and flexible, nothing like a leather boot. 
Last summer I just said to hell with it and left the OTBs behind and went with my Keen H2Os.  Big mistake.  Not nearly enough protection.  I got off pretty lucky.  So this year I'm going to try something new - Baffin Amazon's:   (You need to Login or Register
One thing I like about them right away is that they are a Canadian company (of course the shoes are actually manufactured in China.)  They look good and fit well (I had to order a size up) but I won't have the real skinny on these until I put them through their paces come spring.