I like WW Link a lot, but when I actually think of Link, the first snapshot in my head is Adult Link from N64. His body shape is just the best, he's got the broad shoulders and the best tunic configuration. I love the white leotards, nothing else really seems right besides Child Link without any leotards. I wasn't the biggest fan of brown or green sleeves.
Given that my favorite game in the series is Majora's Mask, i will have to go with a different answer for this question. My favorite Link in personality is Wind Waker. He just wakes up on his birthday and is thrown into a long epic journey across the ocean. It's not like other games like Adventure of Link or Majora's Mask where those respected Links have experience. In appearance my favorite like many others is Twilight Princess for the realistic look.