I always use KMC... they're great because you can easily remove the chain without the need for a chain breaker. Aids cleaning the wretched things as well.
Really like these chains though no long term use on one of these 'skinny ' 10 speed ones yet
Fast efficient service and superb prices.
Dependable and great value chain, I've used several and the only problem I've ever had was getting the missing link to close once. A pair of chain link pliers solved this and makes opening the link super easy