Hi, I would like to buy a rmbp 13 model for school. But which one should I get? I can get the current haswell 256 gb, 8gb ram model for 1449$ with edu discount. Or I can get a refurbished old model for as cheap as 1189$: http://store.apple.com/ca/product/F...z-Dual-core-Intel-Core-i5-with-retina-Display Or 1269$ http://store.apple.com/ca/product/F...z-Dual-core-Intel-Core-i5-with-retina-Display Or I can wait for september for broad well? How much better is the current lineup then the early 2013 ones? P.S. I have bought the current model but I have like 2 days to refund it. I like it so far but the battery could be better. Getting 5-6 hours normally.