@Hans_
(Off topic rant about non Natamis)
The Natami is pushing the hardware limits but it will only be able to run OS 4+ if they add a PowerPC accelerator card to it. Before the Mac went to Intel the PowerPC was a vibrant design with lots of attention and now it is relegated only to game machines which are restricted by hypervisors so that they don't allow ordinary people to experience their full potential.
I think PowerPC is a dead-end as much now as ever and the Intel and AMD processors are reaching a dead end also due to the heat restrictions of higher clock frequencies and are turning their attention toward multiple cores. Since their software doesn't run well on multiple cores they are going to be at a standstill.
I think the Intels will make it further than the PowerPCs because they have a more compact instruction set but that will wear thin when easier-to-use instruction sets prevail. I think the way of the future is asymmetric multicore design where the cores are dedicated to the functionality they are intended for.
What makes an Amiga, in my opinion, is the dual-bus architecture. While most computers are stuck with a left-brain dominant design that didn't allow for parallelism, the Amiga introduced a computer with a right hemisphere for creative thinking. On most computers it may be considered a required peripheral for graphics and sound, but on the Amiga it was standard, integrated, and elegant. On the stock A1200 it was even right-brain dominant due to the underpowered main processor.
I could say more but if you want to hear more of why I think the way I do, I'll start a new thread.