I sold my macbook pro about a month ago to get a macbook air. I was so excited but had some issues that resulted in three replacements and finally my decision to ask for a refund and get one of the new penryn macbook pros. I just had bad luck and didn't want to keep replacing. Today I was at tekserve and couldn't stop myself from playing with their demo MBA. God I miss it! My MBP is such a huge, heavy, clumsy machine in comparison! I miss the thinness, the build-quality, the weight and the unity of the machine - and the sheer excitement and fun of using it. The MBP is a great computer, but it feels much less solid in terms of build and design. the MBA is one of those notebooks that pulls you in, entices you and begs you to use it. It's fun! Not many laptops can do that. I miss it tremendously, but I can't swap again because it will prove my insanity and mac addiction once and for all and my friends will leave me.