I hope this hasn't specifically been asked somewhere else. I'm looking to buy a new 2012 Macbook Air. My 4 year old 2.4Ghz Core 2 duo macbook pro with 2gb is slowing a little and is bulkier than I'd like to carry around. So I've decided I want the 256gb ssd because I can't see myself transfering things too often. I'd like this computer to last awhile-I tend to replace my mac laptops on 4 yr increments so I'd like it to last 4 years. I've heard 8gb of ram is a good idea for future proofing. I also tend to have several applications open at a time (typical use would be like preview for pdfs, word, safari, and itunes). I've been trying to find out if the i7 is worth getting for use with programs like Matlab or Mathematica (Will it significantly speed up run time of code I write?). I have also considered using Parallels (It comes free when you order from B&H) to run like Mathcad or possibly if I'm daring solidworks (but that's less likely) So here's the breakdown. The cheapest prices I can find are the following from B&H: $1675 with i7 and 8gb $1600 with 8gb $1400 w/o either (All are of course the 256 gb machines) I guess I'm wondering if the extra $275 is worth it for the i7 and 8gb or if the extra $200 is worth it for the 8gb ram? I feel like the $1400 is a much better deal but will I regret not getting the 8gb ram or i7? If anyone knows better prices somewhere I'm all ears. So far B&H has had the best prices but the $275 being worth it is hard for me to know?