13" MacBook Air or MacBook Pro?

I'm specifically looking at these two models:

13" Macbook Air 2012

4GB RAM (might upgrade to 8GB), 128GB SSD, 1.8GHz dual-core i5 processor

13" Macbook Pro 2012

4GB RAM (might upgrade to 8GB), 500GB HDD, 2.5GHz dual-core i5 processor

My planned uses: typing papers, web browsing, playing movies, programming for iPhone and Android

I also plan on dual-booting Windows 7.

Any suggestions? Preferably from people who have owned one, also please don't suggest anything other than these two, these are the only two within my price range that I am willing to spend on.

EDIT: One more option I didn't think about, buying a MacBook Pro with a 128GB SSD (either having Apple install it or I can install it myself)