I have the choice of one these two machines this weekend, ill probably get it tomorrow. My usage is simple/basic i would say. Mainly internet, email, etc. I cant say i do any regular 'heavy' or specialist usage. I doubt the 2.16 MBA would be out of its depth at all. I currently have a 2 year old MBP 15" 2.4GHz - which i was quite happy with until i was offered a swap for something new of the same spec after taking it in with a screen problem. It was deemed to have had a few too many repairs under apple care warranty. A very unexpected goodwill gesture from Apple Id been keeping an eye on ebay for any MBA bargains so the timing is perfect... Prior to my current MBP i had a black MacBook and i vowed never to go back to a 13" screen ..... The MBA weight is a very appealing as i do carry the laptop almost everywhere with me .... but at the moment im probably going to play it safe and get the MBP as its a no brainer 'unibody' upgrade on what ive got + battery life. Is there much performance difference between the two in internet usage terms? Anyone have any feedback or been in a similar choice situation? And the MBA has Intel Core 2 Duo 1066MHz frontside bus 6MB shared L2 cache rather than 3MB on MPB - Is this significant? Thanks.