This is my opinion. I just got the air a few hours ago. I have a dell regular sized notebook at work. I personally do not see myself ever wanting to carry that work notebook again. It really puts everything into a new perspective. I live in nyc and spend my time carrying a computer on me at all time (home, girlfriends, school, work, coffee shops). I have a spiral notebook in my bag today with my air and I seriously wanted to replace THAT with a thinner pad (or get rid of it completely). Maybe the air isnt the solution for everyone, but a gaurantee that all notebooks 1.5 yrs from now will have to be this thin, because I'm sold for life on the size. Mac newb Disclaimer: This is my first mac and I've looked down on mac for their closed architecture and high priced machines, but I have to admit that I'm a convert now. The UI is amazing and this is defintely the fastest and most responsive computer that I've ever used (no I have not used a mac pro). I love the screen and lighted keys as well.