I used to have a mechanical avid disc on my bike at uni (until it was stolen) though I can't remember which one. I never had a problem with it. Maintenence was way easier than on my current shimano hydraulics and the feel of the brakes was really positive.
Also have those kona forks on my hybrid and a mates put some on his mountain bike for commuting. No complaints at all.
I used to have a mechanical avid disc on my bike at uni (until it was stolen) though I can't remember which one. I never had a problem with it. Maintenence was way easier than on my current shimano hydraulics and the feel of the brakes was really positive.
Also have those kona forks on my hybrid and a mates put some on his mountain bike for commuting. No complaints at all.