Thanks again to all.
J&JPolangin: I'm curious as to what you'll do! (What's haswell?)
Haswell is the planned 4th generation of Intel's Core processor line that is expected to be released next year. It is supposed to bring a significant increase in CPU and graphics power, but given your usage patterns it likely won't make much difference.
...I'm liking this 13" Sandy Bridge due to the deal I got it for...now I'm leaning toward gifting it to a family member with Haswell or later comes out with an 11" MBA with similar battery life as the current 13" units!