This isn't that expensive a hobby for me or Golem. And when you finally get your X1000, I'll probably have a G5 Mac with a X850 XT video card that will outperform it.
When maximum performance matters to me, I have my Linux box which can easily crush any box you can MorphOS on while running several instances of AROS and UAE hosted side by side, as well as assorted other VM's if I so want.
Old PowerPC based Mac's simply have no appeal to me, regardless which OS they run. We recently threw a fully working one away at work because nobody could be bothered taking it home.
The Natami looks like a neat system as does the minimig w/ AGA, but these aren't realistic systems for everyday use.
As I said before, you keep blowing your money on old hardware or re-creations of old hardware. I'm getting more use out of what I've got and its gets better on a regular basis.
MorphOS on a G5 wouldn't be a realistic system for everyday use for me either. I don't have any animosity towards MorphOS but it just doesn't interest me - AROS appeals to me because it's open source, and AmigaOS4/X1000 appeals to me because it's new hardware specifically designed for AmigaOS. Classic AmigaOS appeals to me because, well, it's M68k and the classic chipset or derivations of it that I know and love. MorphOS has none of those.
If MorphOS does it for you, then good for you, but to me it doesn't matter at all if it's more "cost effective". Cost effective is what my Linux box is for.
I'm not "blowing my money" on anything. I'm spending money on things I enjoy to tinker with. As I said: It's a hobby.