I consider myself a very light user- web browsing, microsoft office, skype, occasional netfilx, that's about it. I have a 2008 15 inch MBP which I am planning to sell as soon as I figure out what I getting next. I went to local BB and looked at 11 vs 13 inch MBA. I think 11 inch would work fine but I don't really need portability of 11 inch since I carry my laptop in my bag. My only requirement is to get as much battery life as possible. My understanding is that 13 inch is better in this regard. True? Given all that, would a 2010 refurb 13 inch MBA be perfect for me? They have them in refurb store for $949 now? Any advice is appreciated.