Earlier today, I did a comparison between: MBA 1.8 GHz 2 GB ram 64 GB SSD MBP 15" 2.5 GHz 3 GB ram 200 GB HDD Opening the following softwares: Word 08 Excel 08 PowerPoint 08 Numbers Pages PS C3 Numbers KeyNote iTunes Safari almost 90% of the sofwares installed as demo in the Apple store To my surprise, the MBA opened 8/10 softwares faster than the MBP by 1-2 seconds. The only reason I am thinking of is the SSD in the MBA. How much faster is the 1.8 MBA compared to the 1.6? I already read some benchmarks but I would like to know from your personal experience since benchmarks are just numbers that are hard to be translated to human time BTW, if I buy a MBA from eBay, is it possible to replace it by Apple if it had any problems? For some reason, they are much cheaper in eBay Thanks guys.