But if you want it just because it has a brand name, ask yourself very seriously whether that is a good enough reason or not to reject the other solutions out there without even considering them.
I'm a big fun of Aros and I'll buy a cheap PC for it.
I'm also fond of MorphOS but if the two systems will provide the same things more or less then I'll definetly choose the one that has the Name.
I'm an Amigan just like I'm Greek

would I ever change the name of my country? no, so why should I let the name of my beloved computer die?
Yes, the name is important, only if the result of the AmigaOS 4.0 is pityful I'll consider the other AmigaOS-like option. I'm not in the search of other operating systems, I don't care to have a new powerful or whatever OS, I just like to have my AmigaOS upgraded and a new Amiga (AmigaOne or Pegasos if the 4.0 runs on it and it is a cheaper hardware solution)
if you take the name 'amiga' out of the mix anyway...
Yeah but you don't, the name is there.
As I said only if 4.0 is worse than my current AmigaOS 3.9 I'll start to consider MorphOS.