Wouldn't be keen on a Macbook Air, doesn't even have a DVD drive and you know the battery will die a day after the warranty expires, making you pay a small fortune getting Apple to dismantle it and install a new battery. The chepest one starts at £1199, and I think that is too much.
For a grand you'll get a fair choice of 17", full size keyboard Wiindows laptops, whereas with a *regular* macbook you only get a 13" (
) screen and the Macbook pro only gives you a 15" screen and a 120Gb hard disk for £1300. One comparison would be spending a grand on a HP DV9689EA at PC World which has the same processor, the same amount of memory but gives you a 17" screen, full size keyboard and a stonking great 500Gb hard disk.
Sorry, wouldn't buy a Mac, think they are overpriced.