@Mizar
Alot depends on what you consider to be "Amiga".
I consider MorphOS, AmigaOS 4.1, AROS, and those many fine Amiga emulation products to be the "next" generation.
Unfortunately, at this time, your choice of operating system determines your options for hardware. Likewise, your choice of hardware determines your options for operating system.
For example, AmigaOne X1000 is the most expensive route, but includes the AmigaOS 4.x operating system. As far as I am aware, your only other choice for this hardware is Linux (not sure which distrobution they use).
My own PPC system is older and somewhat dated now, but it fits my current needs.
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redfox