I have no use or inclination to buy the 2016, so I am planning to buy the older rMBP15" from eBay. I have found couple which are in my price point and have the AppleCare for next 2 yrs. With ios10, there was an issue with activation of phones if they are still under previous owners name/account. I am not sure if that will apply to rMBP but was wondering how I can activate the AppleCare and move this Mac to my account? Any help or insight on this process is appreciated.