Technically not a console but I would say my Atari 600XL. Still have it, still works too.
Played so many classics... Pengo, Asteroids, Centipede, Defender, Pitfall, Pac-Man, Rescue on Fractalus, Space Invaders, Galaxian, H.E.R.O., Star Raiders, Missile Command, Pole Position, the list goes on...