Which OS Would Be The Best Amiga Way Forward...

[Belial6]

This was a loaded question from the start.

For 68k Amigas, there is obviously only one choice.  That is Aros.  MorphOS is not 68k, and neither is OS4.  It may work on PPC computers that use an old Amiga as a backplane, but it is not an OS for fully classic Amigas.

If your going to count OSes that run on non-Amiga hardware, you have an entirely different conversation, and as much as some people will hate to hear it, it includes COS.

For non-Amiga Amigas, the future is likely COS running UAE with AmigaOS 1.0-3.x or ArosX86 running UAE and Aros68k for classic compatibility.

[Belial6]

I still think Aros68K is the most important piece of the Aros puzzle right now.  Not only will it allow for brand new, fully functional 'classic' amigas, it will allow the "NG" Amiga running on whatever hardware it gets ported to, to be backward compatible with the 'classic' Amiga's via emulation right out of the box.