Oh this tis a tough one:
PS3 - I still play and is great for blu ray movies
360 - Still play lots no way as good as the ps3 tho
Wii - Dont have one myself (sister has one ¬¬) Loads of fun, but after Wii Sports or Mario Cart its pretty much crap
SEGA MEGADRIVE OMFG i LOVED that when i was a kid it was like an innovation at the time.
PS2 - meh. good at the time
Voted for Sega Megadrive becasue at the time is was great !