I recently bought the 11" Air as I was planning on travelling abroad and wanted something light and with a long battery life - with student discount, it's the best money I ever spent.
It's incredibly light, and to be honest, I think the screen is brilliant. I was slightly apprehensive that I'd struggle in terms of watching films and tv on such a small screen, but as a self confessed Netflix addict, I've not really noticed any massive difference between this and my old 15" laptop.
It's also incredibly fast, and the navigation and interface are smooth and flawless. Also a treat that it makes absolutely no noise compared to my old laptop which was virtually impossible to use because it was so loud.
I appreciate the storage on the Air isn't great, but is good enough for my rather large iTunes. I'm able to store all my photos/videos via dropbox etc anyway and have a fair share of documents - I'm yet to run into any problems with too little storage.
I absolutely love my little air - perfect for my browsing, music and movie needs.