I loved the Sega Saturn, hardcore as well as SNES, DreamCast and N64, man this is tough. I would have to say though it is PSX. This is the system that introduced me to MegaTen, The Shin Megami Tensei RPG series which is hands down the best RPG series out there. Playing Persona 2 for the first time was incredible and I loved the remake of Part 1 on PSP , Digital Devil Saga on PS2 as well as Devil Summoner 1+ 2 , Nocturne and I am looking forward to Catherine on PS3. Atlus makes the best games hands down! Oh, I cant forget the first time I beat Xenogears as well as Final Fantasy 7, man the PSX is classic folks!