I voted AROS. I won't pay ridiculous money for 10 year old speed ppc hardware just to run amiga os4. Their closed model, and rape everyone left for every penny you can and give them as little power as possible "strategy" dosn't appeal to me.
They are killing themselves staying on ridiculous expensive slow ass old hardware. Don't mention X1000 to me because its not real yet, so what is the fastest amiga os4 machine you can buy now? 1ghz? I think I got a 1ghz computer in the year 2000. Come on man, really.
Aros runs beautifully on just about any pc. Add a sblive (20$) an intel network card (20$) and an fx550 nvidia card for 40$ and you've got a fantastic machine for very little investment. I also love knowing aros can never die, or be controlled by fucktards.
MORPHOS is my second choice. PPC Macs are priced reasonably for what you get. I just wish they finish support for g5 macs. If they did that I think I'd buy a g5 ppc mac and morph right away.
Steven