@alx,
Agreed.
From a geeky point of view, I prefer PPC and so I'm quite sanguine over the choice.
However, I must admit x86 could have been very interesting.
For the majority of windows users, it hardly seems to matter what stratospheric heights their MHz ratings reach...a 'must have' windows upgrade soon comes along that pulls the system performance back down back where they were before they upgraded their CPU :-)
Few OS kernels come close to the efficiency of exec, a native implementation running on some overclocked AMD would be quite something.
But the same is true for PPC and I for one am looking forward to seeing OS4 strut it's stuff on a decent PPC system :-D