Nintendo 64, PS1, Gamecube, PS2, Xbox 360, PS3
(I'm not counting portables.)
Currently, I only own a PS3. I actually sold all my consoles so I could afford a PS3 lol.
I see you've had more than one console every generation, that's where I feel I've missed out on some great consoles such as the n64 and dreamcast, obviously I've played snes, gamecube, ps3, xbox and 360 ect but never owned them, I remember my mum making me sell my Megadrive to buy a ps1, I still regret selling that beast to this day