Without looking at stats my answer is Kyrie was the most talented shooter while Price had the best overall career. Price was the gold standard free throw shooter, for instance, but he couldn't hit circus shot after circus shot like Kyrie did against the Spurs, let alone that Finals miracle.
Gonna give Boobie a shout out as well because he was the first great shooter I watched. Not just Game 6 but that incredible Rookie game MVP performance. There was something about his form that was just beautiful.