AROS has come on a long, long way since the previous time I tried it a few years back. Plus if you get supported hardware (the iMica for instance) it's a very snazzy low-power (silent) box. And best of all, you can read and write Commodore 64 disk images on it, if you have a Catweasel.
I'm running it right now on the screen next to this one, and although there's still one or two stability issues it's 100% worth a try.
