Hi guys, I recently just lost my 2010 Macbook Air (2GB/64GB SSD) It's a secondary laptop which I use at school for watching video lectures, internet surfing and word processing. Planning to do some programming on it too. I don't really need a powerful laptop, nor do I need awesome battery life as my requirements are quite low. Anyway I'm a poor student so I'm considering buying a second hand laptop off someone. With my old 2010 MBA, I found it constantly lagging when I had a few tabs open, or when I had a video playing. But I think that shouldn't be an issue any more with Core i5 processors of the 2011 model, along with 4GB of RAM. Now the question is, would there be any significant difference between the 2011 and 2012 model for my needs? I saw a great deal on a 2011 model ($550, 1 year warranty, perfect condition), and I'm wondering if I should snap it up now or wait till a good deal for the 2012 model shows up.