Dick Grayson is the classic Robin, but if anyone tries putting him back in his Robin mantle is crazy, he's wayyyy past his expiration date, and has built himself up so much as his own hero.
JTodd is the unlucky Robin. Live Fast, Die Young, and get revived as a guy in a Red Hood who is always brooding. I think he was the worst, IMO.
Tim Drake is probably best defined as the Modern Day Robin, since he's been there for an ungodly amount of time after JTodd got the crowbar. He's also the study of 'Why Batman needs a Robin', which I find it to be a great concept.
Ive never really read Stephanie Brown, so no comments there.
Damian Wayne is my personal favourite of a Robin, which I guess represents what the three previous Robins excelled at, Acrobatics, Aggressiveness, and Detective skills. Too bad for Batman Inc #8 :(
Jason was voted to be killed off when he was robin. He may be a cool and popular character now as red hood, but as robin he certainly was not the best. Nightwings robin days are years in the past, but he was very effective as robin. Drake is my favorite, but Damian was also a really good Robin as well. Haven't read any of Steph's stuff. I'd say Tim, Dick, Damian, Jason, Carrie Kelly, Steph
based solely on their time as Robin:
1. Tim Drake
2. Dick Grayson
3. Damian Wayne
4. Jason Todd
5. Stephanie Brown
based their whole career
1. Dick Grayson as Nightwing
2. Jason Todd as Red Hood
3. Tim Drake as Red Robin
4. Damian Wayne
5. Stephanie Brown as Batgirl
Nothing against Stephanie, I do like her.
Tim is my favorite robin. his arc in identity crisis and the effect it had on him really sealed the deal for me. besides that, i really think it's cool that his deductive skills are or par with the batman. and i enjoy the brotherly bond between him and Dick.
now as heroes in their own right...I'll definitely give it to Grayson.