Worst Amiga? The Lorraine! Ugh, what a beast! All those wires a...
Hey! Stop throwing things at me!
Although I would like to make a semi-serious comment and say that I think the worst looking Amiga was that god awful "Walker" thing. I'd be afraid to have one on my office desk: people would constantly stroll by and stuff bits of garbage into the floppy slot thinking it was a trashcan!
Ultimately it didn't matter, but I'm kind of glad that one was never released.
Also, what was that one concept only (empty case) post-C= Amiga that Ryan "I am a real Doctor, damn you!" Czerwinski wound up with? Gah, that thing was hideous. Looked like a Compaq Presario ca. 1997ish or so, with that funky, permanently up-angled monitor...yeesh.
But ultimately, my serious opinion about what the WORST Amiga was would be: the Amiga International A4000T. RIDICULOUSLY overpriced, woefully underpowered/under-featured; probably what really killed the Amiga as a sellable product here in the 'States. IIRC for $3000.00USD you got an 040/25 with four megs of RAM and a 250mb HD or something pathetic like that.