Hmm...better choose my words carefully.
First, I don't believe that any modern machine can be a 'true' Amiga, any more than the new Star Wars films can match the feel of the old ones, even if they have dated badly. That Amiga is gone, and no sticker or licence will make a difference. However, the Amiga we came to know post 1997 is still around, and that is the OS. It's not as good as the genuine article, but its still better than nothing - or than other platforms.
IMO, MorphOS is more like an Amiga than a real Amiga. It even has the feel. It's *much* faster, more stable and more powerful. All the things I liked about my Amiga are there, and stronger. Most of the things I disliked are gone. All it lacks is the custom chipset (on a Pegasos, that is). I haven't felt such an improvement in usability since I upgraded from a C64 to a A600.
OS4 on A1...I won't go there since I've never tried it. But if the benefit of modern hardware is used as well by it as MOS does, then it will be a great system to use as well.
UAE doesn't feel like an Amiga. The timing is strange; its ultra-fast in some respects and bog-slow on others. When used for games its excellent; when used as a permanent Amiga system much less so. It doesn't have the feel. I still preferred to use my *extremely slow* 040/25 Amiga than UAE on a 1.3GHz Athlon. I haven't used XL, Amithlon or AROS.
There, nothing too flaimbaitish there, I hope...
