These days behind "Amiga" there is company that prefers working for microsoft. They are total failure, they weren't even able to produce t-shirts!
So the legal entity that bears amiga name is not worth having it.
What else is left? "Hyperion" and "Eyetech". How much more amiga is that than "Genesi" or "bPlan"?
It isn't! They all are amiga-related companies but none of them is that true, original amiga/C=.
What is amiga for you? For me its simple and nice OS, its community, its software that I like, its alternate way of looking at computing, big-endian machine, etc.
But these things apply equally well for both Peg+MOS and A1+OS4.
Look for machine that has amiga look'n'feel you like, not the machine that has amiga sticker on it that you got used to.
