I don't know what to get. I WANT MY MACBOOK AIR TO LAST ATLEAST 5 YEARS. I have no problem getting a external harddrive. A 128gb 8gb RAM or i7 256gb MacBook air? I will be editing tons of photos, no game playing but I will have 4 to 5 apps for editing my photos. I use the Internet an write school papers in iWork. Which one should I get? Will he buyin one before the month ends.