So back in September i bought an iMac and iPad (32 wifi) to replace my old Blackbook. I use my iMac mostly for streaming video and some light photo editing, browsing, etc... And my ipad i was using for some note taking in class, and some browsing when I'm not at home. However, I've realized that the iPad does have its limitations, mainly when it comes to downloading PDFs, chatting with people over facebook chat and the like, and during lazy use (lying in bed, having to hold the iPad... Its way too challenging haha). But the ipad was certainly great for traveling, bringing it to class or on the plane. Since the macbook air came out, I've realized that it does a lot of what i love about the iPad (instant on, very portable form factor, and I think more comfortable to use). My only hesitation is battery life drainage. If i were to buy a macbook air, and sell the iPad, i am looking for something that i could easily take with me for 2 days and not have to recharge. I wouldn't be using it the entire time of course, but it clams to have a long standby time. Also, buying something with a 1.4 C2D looks hard to justify. Based on the above usage that I'm looking to use, does the base 11.6 MBA seem like it's a good fit? And to those who own one, should I spring for the 4GB upgrade? Also, how do you find the battery?