My wife and I currently each have a 2012 13" base model MBA. Work great and no issues with them. They have 5-7 months of the original Apple warranty left on them. While I did just buy an 11" 2013 to try out, and may go with, I was thinking of actually getting the 13" version. Is it worth upgrading from our 2012 models though? I figure I can net $800 if I sell each of the 2012's (mint condition, have BestSkinsEver skins on them and original retail box, charger, etc.). Leveraging my brother's teacher discount, I figure after tax, a base 2013 13" MBA would cost me about $1070. So basically, is it worth $270 per machine for: Battery Life: 5 hours to 10 hours (real-world) SSD Speed: write/read of 230/440 to 320/720 (MB/s) Graphics: HD 4000 to HD 5000 Am I missing any other significant differences? Battery of course is the primary upgrade. Though, while used in many rooms and sometimes the patio, our laptops rarely leave our house. From what I've seen, the Geekbench scores of the base processors from 2012 to 2013 are essentially the same. 4 GB RAM and 128 GB storage should remain plenty good for our use (web, email, MS Office apps, light iPhoto/iMovie use, playing iTunes music and videos...very very little game playing). Thanks!