I'd just like to break this happy MorphOS advocacy thread, in order to say that I have tried it and didn't like it. Sure, it boots quickly. It's fast. OS4 is almost certainly going to boot quickly, and run fast. I've not used OS4 betas on PPC hardware (I have on 68k, and there was nothing to suggest it is less stable or slower than 3.9). I have other reasons, but my foot is firmly in the OS4 camp. If Morph ends up being the only way then I'll probably give up and buy some dodgy Windows box.
Chris
