Living with the new MacBook Retina

There's an unusual degree of forthrightness - sometimes bordering on vitriol - in how outspoken people are about the new MacBook Retina. It's something you see occasionally with high-profile, edge-pushing devices: not just dissent as to whether it's a good product to buy or not, but a sort of slightly-frothy aggression in aiming to convince you that you've made the …