I switched and I'm glad I did. Granted, the only real differentiator is the retina screen, but that's what I've been waiting for. Everyone is complaining about the price, but a similar equipped Air (8GB Ram, 2.0 with turbo boost to 3.1, 256GB storage) is $1699. That's $300 less than the same spec rMBP. $300 for Retina? And the only tradeoff being a half pound of weight? Yes, please.