The Best C= Amiga technologically speaking, is the Amiga 4000, although not was improver the audio features, like said the same Jay Miner(RIP), back in time. The problem nowdays with the A4000, its very hard find cards, and other thing for expansion.
In this times, the best is the Amiga 1200, becouse its more easy to expand, and keep updated.
The Amiga 600, its very nice machine design, you know, could be great with A1200 power in any A600 case.
The Amiga 3000, was a great machine, the internal scandoubler and VGA conector.. that feature should be incluided in the A600, A1200 and A4000.
The A2000, the king of Amiga Big Boxes!!. For the time very expandible and very good quality. Not AGA.
The A500, the most popular Amiga ever. Nice back in time, for a 80s & 90s hoping boy!
And the Queen Ever! - The Amiga 1000. Say no more!