I like em, I've used them since the start of last year in their MTX29 incarnation. The Nukeproof branded ones are cheaper though, hence using those ones now. They're not an ultra tough rim but I don't buy them for that. I use them as they are more likely to dent rather than puncture which in my view is a good thing. That's not to say that they dent hugely though, just that the bead is wide and a bit softer than some so dimples rather than simply slicing through the tube. I only just got around to replacing the front one which given the amount of racing and riding it's done is pretty good in my book.