So I have my 15" classic MBP and now I am needing to bring a laptop to school. I have been taking this to school, and I find it a little heavy. The battery does surprisingly good, I unplugged it at 7 AM and had it go onto 5% only at 10PM. But I will be getting a new computer. I have considered a Windows, but when I keep thinking on the need of touch screens for W8 and anti-virus/firewall crap, it makes me walk away. So I need a Mac that lasts 7/8 hours at least, and all Macs can deliver this, being what Apple says. I think the classic 13" MBP is a great choice, but with an SSD and 8GB of RAM. I like the 13" rMBP a lot, but I am worried that the Retina Display will drain the battery. I don't understand how a Retina Display MacBook Pro has the same battery life as a classic one. Anyone who has a 13" Retina MacBook Pro can tell me if the battery lasts that much, with Bluetooth off, surfing the web and taking notes at 50% brightness? Can someone with an Ivy Bridge 13" MacBook Pro tell me how does the battery do in the same way? I know that I won't be using my MacBook Pro for all classes, but still, I want something that lasts what it says. I will be buying it in November, because I will be in the USA in that time (I live in a place that taxes are to the top and a MacBook Air (11") base begins at 2.5k USD). In November, the Keynote will already have happened and I hope they update the processors to the Haswell ones. I want to know how these computers stack up on battery life, so I can estimate how the 4th gen Intel i-Series will do in them. I will always have the Air as a backup plan. Doesn't look as manly or as badass like the Pro, but still acceptable. It's not pink, right? Well thank you all for helping me here, have a nice day!