Definitely the Link from OoT/MM. Like others, that is the Link that I grew up with, since OoT and MM were my first two Zelda games, and I would play them to no end. Plus, he's the one that has suffered the most... What do I mean by this? This user has a pretty lengthy list on why:
User:Osteoderm Jacket/Thoughts - Zelda Wiki
It's a pretty interesting read!