The extra one that should be mentioned (but only for used Macs, I suppose) is "what was the latest Mac Apple dropped support for in OS X, and how much newer is

The extra one that should be mentioned (but only for used Macs, I suppose) is "what was the latest Mac Apple dropped support for in OS X, and how much newer is the Mac you're looking at?" I hear with Lion they burned the Intel Core Duo (i.e. 32-bit) CPU Macs. Which are probably still pretty solid machines if you get some other OS running on them.