I have owned a Rev A MBA and I loved it except for the overheating issues. No, I have not tried a new on with the 9400M, but I still feel like it is one revision away from REALLY being a great computer. Albeit with the suggestions I have it may cannibalized some MBP 13 sales, I would gladly pay the extra fee for the thinness. In short, i really think the MBA is just one revision away from really being a necessity product. Personally, I feel like the MBP to be a premium ultraportable should keep the same 5.0 hour rated battery. I would assume this can improve over time, but it is unrealistic to say it should be 7+ like everything else. Secondly, I think 4GB of RAM is feasible/necessary for the next revision. Lastly, I would really, really, really like to see 1 1440x900 res screen. If there is one thing I love about the X300/301 is the added screen space thanks to the higher res. I would much rather have a MBA as my portable since I have a MacPro for my power stuff, but I look at the price of the MBP 13 and then see the Refurb 15 at basically the same price (by using Edu Discount) and I just feel so stupid not taking the 15 at that point. Granted, it is always best to buy what you need regardless of price, but having had a 13" and a 15" before, the extra pound wont kill me. If I were not in the market for a portable laptop, I would gladly wait for a MBA with 4GB of Ram though. Oh well.