Hi all, I am debating between keeping my 2012 MBA (that I love) or upgrade to a 2013 MBPr. The retina screen is amazing...but I do have a question. First, I am not 100% fond of how Apple does soldered memory and not allowing you to add memory as needed...but what else can I do? With that said, I always feel like I need to upgrade it to the max. My current MBA is a 13", i7, 8gb RAM. I think the 13" screen is perfect for me. I would go even to say this is the best laptop I have ever owned. I had one stolen after having it for about 4-5 months and bought another one identical instead of trying to 2012 MBPr's because of battery life. With the upgrades, it says MBPr's (13") can get about 9 hours of battery life - and I think mine was stated to get around 7-8 hour marks. I don't necessarily need a 12-15 hour battery life (for a new MBA). The questions I have: 1. To get the most battery out of a 13" MBPr, should I upgrade it to an i7 processor? I have seen different reports on this. I am not a huge power user for video or pic editing, so I'm not so sure a .2 ghz speed difference would matter to me, unless it will help with battery power in some way (maybe it's smarter with battery, I don't know?). 2. Will I get equal or better battery life on the new MBPr with the same usage, same screen brightness, ect? Mavericks did unfortunately make my battery life a little worse - some others are complaining about this issue...I'm sure it will be fixed though if it is an issue or bug in Mavericks. What I can not have is a 6 hour battery life on minor web browsing on 50% brightness. I hate keeping up with a charger and usually have one at work and one at home. I only take the charger if i'm traveling. 3. The weight difference. I know it's like .48lbs, and i've held both. I do love the MBA weight, but wonder if that extra .48lbs will start making the laptop feel "heavier". Any other people that have upgraded from the Mid 2012 MBA to a late 2013 MBPr, your opinions would be greatly appreciated.