I've never been able to understand why people complain about lack of hardware support with AROS. It supports more hardware than both MorphOS and OS4, especially OS4.
Basically the problem is that you have to buy second hand hardware, and then it'll probably work. People tend to assume that because it runs on a PC, that it'll run on a recent PC - but that's usually not the case.
@dammy
Running a whole sandbox of UAE to just run a simple commandline app isn't what people want. They want it to run in the shell. And what about if you want to run a program like "Diskinfo" to get the disk parameters? That wouldn't work well from an emulated environment.
I don't think even the JanusUAE authors would say that running UAE for a command-line app is ideal.
When I say that AmigaOS 4 feels more like an Amiga, you have to remember that "feels like" is completely subjective. For many others, AROS feels more like an Amiga, for others MOS feels like an Amiga.
@wawrzon
AROS 68k is pretty awesome work.

Only having the API from an old version of AmigaOS from 1994 is
not a good thing though - and in fact AROS has its own API. The developer should be able to use the lowest common denominator, but each of the three Amigalikes have their own APIs already. I too wish they were standardised but that's not going to happen.
I think this is going to turn into a red vs. er... what colour is AROS again? Anyway, I can get see it getting all argumenty so I'll stop now.
Suffice to say:
AmigaOS 4 feels more like an Amiga to me, and as a developer has advantages for me, but your mileage may vary!