Absolutely. If it wasn't for the fact that I could try MorphOS for free I never would have even bothered with it. Within 10 minutes of trying it out I bought a license.
I can understand that. I looked at AOS4, but after installing MOS on a Mac I'm inclined to agree - its worth the license fee.
MorphOS works great, its a little faster than AOS4, and it has some pther advantages (mentioned by past posters) over the alternatives.
Really if you've got a Powermac, MorphOS worth condidering. Once I tried it, I decided to abandon OSX (my initial idea had been to dual boot the system).
Now, instead, I'm booting Ubuntu and MOS.