Hello. I currently own a 2012 MBA which I love. I have an opportunity to sell it for almost the price that I bought it, and was thinking to buy the updated model. However, a thought came to my head - would I be better off with a refurbished 2012 MBP w/Retina display? I only browse with tons of tabs and watch movies on it. 95% of the time I'm connected to the charger (apart from 'juice running' every few days when the laptop remains on the desk). The specs on both of the are core i5's (MBP - slightly stronger), 8 GB ram and 128GB SSD. Anyway, what are the disadvantages of a refurbished laptop, if there are such? Do they replace for one, the battery? Or will it be slightly more worn? What about fans? Thanks. P.S. I've noticed that my MBA has a black clipping issue, in the left test image, everything under 4 is pitch black, which is annoying at times. That's probably the only thing I don't like about the laptop. Is this a known problem with the MPA's? What about the Retina MBP's? Thanks.