I've played and i own all of the original Zelda titles!Ocarina of Time is the number 1 followed by Link To The Past and Link's Awakening!Especially Link's Awakening is soooo full of memories... Wind Waker and Twilight Princess are top games too . Majora's Mask and Minish Cap had some wonderful things to offer! The original NES titles are out of comparison cause they're classic and without them, there wouldn't be the Zelda series as we love it, today. Oracle Of Seasons & Ages were really great "descendants" of Link's Awakening.
In total there is not a single game of the series that someone could name just "GREAT".