Never cared for the wedge machines. Bought 'em, 'cause I was poor, but never cared for them. Expanding was a chancy thing requiring all sorts of hacky tricks to get your expansions in. I think cheapo boxes like that held the Amiga back off of really breaking in to the desktop PC world, honestly.
As to desktop units? A3000, A2000, A4000. The 3000...man what good can't I say about that? Someone else described it as sleek and sexy and able to hold its own against SGI and Sun desktops, and I agree. The A2000's case actually came from a canceled C= Unix box, the C900. The 4000 was whatever Windows/DOS machine case that C= was flogging at the time, so zero points for style there.
Of the consoles the CDTV is probably the best; you can actually put it in with other components in a tight space and still use it. However I can't really fault the CD32 - that thing was meant to be a real console, competing with the 3d0 (3dO? 3do? Never sure about that one), Playstation and Sega CD - all of those are "weird" shapes and I can't really fault C= for designing something unique looking. Plus the CD32 wasn't meant to be a desktop computer, so :-P on the haters!
Oh and there's a special hell for the designers of that godawful "Walker".