I've just put together a new track bike and got a couple of kmc 710s, pretty impressed with the construction. I do the hot wax method with the rice cooker, and with KMC chains you don't need to strip the factory lubricant off before waxing, they've come out a treat. Unfortunately it'll be 2 weeks before I can make it to the track to give them a run. I think they were just over $20 AUD, compared to the Izumi chains I've been using ($35-$40) and are hopefully quieter.