So thanks to some extra overtime and my sister needing a new computer. I am giving her my MBA 2010. So I am now in the market for a new daily computer. Any advice, new MDP 13' or 15' with 256 SSD or stick with another MBA fully loaded? I am up in arms about the dual vs. quad. I don't really use the optic drive, but I do have the USB superdrive. Price isn't a huge issue, but I just want something that will be as close to bulletproof in the long run. Thoughts would great appreciated.