while not as retro. i kinda went from vic20 to amiga500, and then stuck with amiga untill x86 came in, and toyed with the rest.
commodore:-
Vic20
Amigas re. sig.
Nintendo:- NES, N64, GameCube
Sony:- PS1
Atari:- XEGS with detatchable keyboard.
Sun:- IPC with a cycle5 turbo board (sparc5 equivilent), solaris2.6
and some (yawn) x86's