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I used Arch for a while and was quite pleased with it. I couldn't stand the naming of devices so I was quick to switch to udev. I read this interview with my own reasons for finding Arch usefull, but it's amazing how the dev's intentions are translated into their work. In other words, the distro does a good job of representing it's devs. You don't really get that feeling with many other distros.
It would be something to see a distro such as Arch to be able to have the financial and developer abilities in order to complete the goals of it's developers at the pace of a commercialized distro.