I second the other review that suggests this pedal is A) really, really great and B) clears mud like no other, except for maybe the flimsy, Crank Bros eggbeater-style pedals. I've not had any experience with servicing the pedal, but am comforted to read all of the reviews on mtbr and here that detail good experiences with that side of things. This pedal was my first clipless, and I must say, they're so easy to get in and out of. For those of you just getting into the game, don't bother with the platform/clipless hybrids. The platforms are quite the mental crutch and serve only to get in the way of getting into the pedal. Obviously, just my opinion.
One small issue, I went from one shoe to another, using the same cleat and for about 5 rides, I experienced about 1mm of play on my right pedal. It has since disappeared, but if you read more reviews, you'll see others have had this problem, as well.
If you can pick these up on CL for around $100, they're an absolute steal. If not, get 'em anyway!