These cameras are new this year so no one will have had one long. I have had a RM-45 outdoors going on 3 years now without a tick in performance. I have had the HC600 out for a month and have been pleased with the results. The flash seems better than my BTC's even though it is black flash.
This is a whole new model for Reconyx so the jury is still out on the reliability. Chasingame.com stopped their review due to some sort of issue with their test camera so I will withhold a recommendation at this time.