Well I narrowed down my selection to an 11 inch MBA or a 13 inch MBP (if fixing my comp is too much) and I want to know how many hours are you getting on your older airs. As far as I can remember the battery wont hold as much power as time goes on so I want to know how many hours do you get on your MBA's now that are a year or two old? I believe it's suppose to be 5 hours fully. Btw my question is for people with "light" usage, meaning just emails, web browsing. I watch videos on youtube occasionally, but I concentrate more on making my on, and editing them for youtube.