I grew up with Dick Grayson as Nightwing and he's been on the top of my favorite heroes next to Batman. Tim Drake though I have to say is my favorite Robin. He was a sidekick who was a solo hero and a sidekick at the same time. He took down Joker, King Snake, and went up against the KGBeast with Huntress. He even took over protecting Bludhaven after Dick got injured during War Games.
Jason I think was made to look like Dick Grayson too much and he just couldn't cut it with fans. I believe he was even introduced as a circus kid before Crisis on Infinite Earths, after that he was turned into a kid living on the street stealing the batmobiles tires.
Stephanie had a short run as Robin but that was just a story plot for War Games and Damian wasn't supposed to exist until Infinite Crisis happened. Son of the Demon was considered an Elseworlds story until then.