Hello everyone, long-time lurker, first-time poster. I'm currently deciding whether or not to replace my Alu MacBook Pro with a MacBook Air. To that end I went to my local Apple store to take a look and get an idea of whether I could live with the screen size of the 11". Anyway, I noticed that the screens on the demo machines all had the brightness set way up at maximum. When I knocked the brightness down to 50% the screens became (to me) far too dim to use without straining my eyes. This is important since in order to get reasonable battery life (esp from the 11") it seems that the brightness needs to be turned down. The perceived dimness of the display could be a consequence of the brightness of the environment - i.e. a brightly-lit Apple store or it could be that the screen is genuinely too dim at 50%. Therefore the question I'd ask is which is the most likely explanation? Also, if you own an Air do you find its screen usable at 50% in your home, on trains, on airplanes etc?