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I also bought a base Air strictly for web browsing and Aperture. For me it was a $300 swing to get a 8GB ram model since I bought it for $999 at Best Buy. If I went for a BTO, it would be around $1299.
+1
I've been saying this for some time. Saying "It's only $100" is only true if your only buying option is through apple. Any US buyer would be foolish to buy a base model from apple.
 
I got mine with 4gb of ram from Best Buy. For most uses, this will be great. But if you're a power user, you may want to consider the 8gb. That being said, I think I'm going to sell mine in about two years and upgrade to the rMBP if I can.
 
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