In reply to glenn0010:
Without wishing to sound like we're all on payroll - or part of a wider conspiracy - I'd cast another vote for the Mutant.
I'm on my second/third pair, as I got on so well with the first that I figured I'd get two pairs in use side-by-side, so that as/when I do the Bob Graham I've got something to change into.
What I like the most about the Mutants isn't just the fact that they can handle mud - it's that they can handle pretty much anything. There's plenty of cushioning, which means that they can also handle harder pack trail as/when you hit it. The only caveat I'd give to that is that they've got quite a large drop, which can affect their stability (although I've never personally had a problem with this).
The only issue I've personally had is with the lacing, as they always seem to go in the same place - is this just me or has anyone else experienced this?! It's the only fault I can find in terms of craftsmanship, but is one that's incredibly frustrating given how quickly it seems to occur!