I had a Dell Inspiron Mini 9 for a while through one of the companies I work for. Nice machine, but the design was a bit plastic-y and the solid state hard drive was APPALLINGLY slow. It got faster after I reformatted it with FAT32 instead of NFTS but it was still pretty dire. I never had any problems with the screen tho.
I was going to buy an MSI Wind U120 / Wind 2, when it's released, but it's going to be limited to 1Gb RAM because they removed the RAM slot to fit in a SIM card slot for the on-board 3G modem. So I looked at the MSI Wind U100 (the current one), which reads really well on paper, I just don't care much for the design.
Which leaves me with the Samsung NC10, which I think looks great, a lot less "cheap" than the Wind, and is similar in spec to the Wind. Only downsides are that it doesn't have 802.11n networking, and doesn't run OS X as easily as the Wind does, but that's not the end of the world as when I'm not travelling, I'm planning on playing with Linux on it!