When I was shopping for a CPO, the questioned I faced was a non-CPO 911 Carrera 4S MY16 w. (IIRR) 18k mi vs my Cayman S MY18 CPO w. 11.5k mi. A wash in terms of price, miles, I like CPO but not the defining factor. I chose the Cayman S based on the road behavior, agility, looks.
A 911 Carrera 4 with relatively low miles would be a good fit for the Northeast, but you will not find a CPO at that range.
Of course, if you need a sedan, the point is moot.