Intellivision and Colecovision are the most fun from the early 1980s.
Intellivision for smart, creative "involving" games.
Colecovision for the excellent arcade ports.
I've never had much interest in any consoles made after 1985 for some reason. I suppose because nowadays it's mostly driving games and first person shooters. Nothing wrong with those but I miss the variety, and the fact you could sit down and play a console game from start to finish in five or ten minutes instead of hours and hours.
