Originally Posted by
subframe
KMC DX-10SC here, on both bikes. Zero problems with the chains or the quicklinks, and the chains have held up incredibly well.
The only chain I've ever broken was a KMC DX-10SC. On the first day of a 500-mile bicycle tour, the chain separated at the aptly named Missing Link. It only had about 700 training miles on it. Repaired it with a spare Missing Link, but it was stretched to the point of being useless after another 100-200 miles. I've since gone back to using SRAM chains; they last longer and don't fall apart.