Pleased with my Acer
I made the plunge after pondering for quite some time and opted for the Acer Aspire One. I love it but the article correctly identified the main problems with it which are battery life (not much more than two hours) and the somewhat quirky Linux installation.
I decided against the Dell mainly due to the stupid keyboard layout. The fact that it runs Ubuntu though is very appealing.
The 901 is just too expensive. I know £280 is not a lot of money, but my One cost £199. When I show it off and can say "it was less than 200 quid" I always get the same positive reaction. Saying "less than 280 quid" just doesn't sound as impressive.
Despite what the AC said above, while I do always travel first and business class, my employer pays those fares, I paid for my One so I still care about its price.
What is interesting about this whole sector is how usable a machine can be while remaining truly portable.
My shiny MacBook Pro is on my desk 1 metre away from me but I can't be bothered to go all that way and open the lid; my One just happens to be right here. That's the beauty of laptots (what mine always gets called in our house BTW) they are so small and light that you can have them there with you almost all the time.