you can go for a D.I.D chain, there good high quality or you could go for the nk gold chain (im pretty sure thats what their called but im sure someone will correct me if im wrong) both these chains are the way to go, only thing i advise is on your rear sproket check to find out if the chain is a 420 chain or a 428 chain.. this has to do with linkage spacings in the chain and how it will sit on the teeth. if you have this right you cant go wrong.
also make sure you get some good quality chain lubricant to keep it all nice, it will stretch a little for the first few rides and need some minor adjusting but thats all, once its finished stretching it will last a lifetime unless there is some form of user error with tension. if you got any more questions dont hesitate to ask.
Cheers, Tony.