Some are very Linuxey. My Acer netbook is fast enough for me and, for the price of an MBA, I could buy 4 of them. It's been reported Toshibas and Sony's have some issues. The i5-based Dell I got issued at work also works very well and seems to be built like a tank.
If you want Windows, well... There are small computers, some of them well built that can run Windows at Windows functionality levels.
Some are very Linuxey. My Acer netbook is fast enough for me and, for the price of an MBA, I could buy 4 of them. It's been reported Toshibas and Sony's have some issues. The i5-based Dell I got issued at work also works very well and seems to be built like a tank.
If you want Windows, well... There are small computers, some of them well built that can run Windows at Windows functionality levels.