hi all. my 2011 macbook air no longer cuts it. what should i get instead? i'm not tied to mac and am not interested in their newer pros that do not include relevant ports. though i'd buy an older version if it was priced appropriately and not refurbished. i would like ssd, preferably 1tb but .5 is fine if it saves me mass cash. a 15+ inch screen that can be color calibrated accurately is necessary. my budget is around $2k, but i don't want to spend that much if what i need can be obtained for less. thanks!