Link's gotta be the best for sure though. He's a much better character this time around, which I have said many times before. Other good characters would be Lucas, Wolf, Mr. Game & Watch, Lucario, Samus/ZSS, Snake, Fox, Ganondorf, King Dedede, and Jigglypuff.
My friend's friend mains King Dedede and he tells me that he uses the chain grab all the time. My friend tried it on me once and I could barely get out of it. Link has a technique similar to the chain grab which I want to master.