Greets to all! I've decided to start this thread to help me decide if I should return my 3 weeks old 2010 MBA for a 2011 MBA. Since battery life is my top priority, can you guys with 13" i5 or i7 post your battery usage during light use, with or without AirPort, using CoconutBattery? I just post my result, not a properly observed result but I check the watt usage occasionally to see how much power the machine is using: With AirPort doing light surfing MR, no flash, safari, few tabs, 6 bars brightness: 5.1~5.2 watt idle, up to 7~8watt when loading a page, and will drop to about 6 watt, then idle at 5.x watt again. Without Airport, just basic iTunes playing: 4.1 watt idle, and I think it didn't went pass 5 watt with just music playing going on. That'll help me greatly on the decision. 2.13GHz C2D CPU power is plenty and I really like the fact that it runs cool even under load. Oh and I have Coolbook running all the time, lowest voltage on all clock speed. Thanks!