These are all base models, battery life is realistic in real world use, not what's advertised: 13" MacBook 1280x800 LED Resolution Intel Sandy Bridge Processor Intel GMA HD 2 GB RAM 320 GB HD 7 Hours Battery Life $899 11" MacBook Air 1366x768 LED Resolution Intel Sandy Bridge LV (not ULV) Processor Intel GMA HD 2 GB RAM 128 GB SSD 7 Hours Battery Life $899 13" MacBook Air 1440x900 LED Resolution Intel Sandy Bridge LV Processor, faster than the 11" Intel GMA HD 4 GB RAM 256 GB SSD 10 Hours Battery Life $1499 15" MacBook Pro 1600x900 LED Resolution Intel Sandy Bridge Processor Intel GMA HD + AMD Radeon 6630HD 4 GB RAM 500 GB HD 7 Hours without taxing AMD Graphics card $1799 17" MacBook Pro 1920x1080 LED Resolution Intel Sandy Bridge Quad-Core Processor Intel GMA HD + AMD Radeon 6630HD 4 GB RAM 640 GB HD 6 Hours without taxing AMD Graphics card $2299 Facts: -16:10 LED screens are getting more and more expensive -If Apple wants to up the resolution of it's 15" MacBook Pro, they would either have to go with 1680x1050, which to my knowledge no notebook that has been updated recently uses, or they can go 16:9 -The Air is for lightweight portability and battery life. The processor increased performance will be incredible. Some people might not like that there is no graphics card, but what else can Apple do? -There are currently three 13" Apple notebooks, the MacBook can be used to get rid of all the extra 1280x800 screens, 320 GB HDs, etc. that Apple has laying around -The 13" MacBook Pro would be the hardest to contain both a Sandy Bridge processor, a capable graphics card, all while maintaining the battery life the current one has -Sandy Bridge processors have shown 20-30% better battery life over the previous Arrandales. The Quad-Cores have shown great strides when it comes to power management.