After years of chasing the bleeding edge and paying higher prices, I’m now accustomed to purchasing “fast but not fastest” computers—I went from a Power Mac G5 and Cinema Display to an iMac, from a 15” MacBook Pro down to 13” MacBook (metal) and 13” MacBook Pro models, and then, in two recent, rapid-fire devolutions, to a 13” MacBook Air and an 11.6” MacBook Air. Though these might sound like some…