Oooh, tough question....
I have only seen pics of the 3000, but I'd say visually it's my fave....
My favorites... Amiga 500, and 600.. A500, my first Amiga, had it nicely expanded. A600, my late father's first ever computer, '030, 32MB RAM.... He loved that machine, he liked the small size...
I don't think 4000's are that bad.... but then again, I do own 2 of them

Least favorite... well, the 4000 could have looked better....
My 1200T runs beautifully, easy to upgrade/mantain.... but doesn't much look like an Amiga...:lol: