I don't have a next gen system, so I haven't played past 3, but I can get with MGS being a top 5 series of all time.
From what I've played, Mario, Zelda, Metroid, Street Fighter, and maybe Castlevania and Metroid are among the few franchises that are really up there with it.
Final Fantasy has had some gems (4 was a game changer, 6 and 7 are classics, and 9 is underrated. 8 was decent but marred by a
battle system), but it feels like it's trailed off in a real weird direction after X.
Snake Eater is the truth. That feeling when you successfully sneak up on cats, CQC interrogate them, hold them up, and choke them out without killing anyone or being spotted