I said goodbye to my lovely Quad Core i7 iMac today and bought a MacBook Air i5 256GB in search for something more portable (which the iMac is certainly not!). A couple of first impressions. *I really was spoilt by the iMac's enormous screen. I feel slightly claustrophobic for lack of a better word working on the Air, but I'm sure I'll get used to that soon. Also, colours aren't as vibrant, but I knew that was going to be the case. On the other hand, it's nice to be able to see your whole work space without having to move your head from side to side. *This thing is so quiet. I can only tell it's on if I put my head down to the keyboard. I opted to go with the i5 over the i7 as I couldn't justify the small performance gain for the extra money, and the i7 runs a bit hotter from reports I have read. I've been using the air for about 4 hours now, and the case is only just slightly warm. It's a little hard to believe! *It's fast. Like really fast. Faster than my iMac in opening apps, no doubt thanks to the SSD, which I happily discovered was the Samsung unit. *The speakers are better than I thought they would be, not bad for something so thin, but obviously they lack the depth of the iMacs. *The keyboard is a joy to type on, the keystroke is just a fraction shallower than the Apple Wireless Keyboard. I tried the Pro's keyboard in the store, which I found to have quite a long travel compared to what I was used to. *Speaking of the Macbook Pro, it was a toss up between the Air and the 13" MBP. I found the Air more comfortable to type on, as your hands are almost flush with the surface the Air is sitting on, whereas on the MBP your hands/wrists sit higher up due to the thicker case design. The MBP's display is slightly more vibrant compared to the Air's, but it's also much more glossy due to the glass panel, which on my iMac I didn't mind, but could be a problem on something portable. Text on the Air is also crisper due to the higher resolution. I felt the MBP's resolution made the computer to feel slightly dated, and its a shame it's stuck with that poor resolution. Apple definitely need to offer a display upgrade like they do with the 15" model. So as you can tell, I'm really happy with my purchase and would recommend the Air to anyone thinking about buying one.