I love both of them, but I would say Taemin surpassed Rain now, Rain is a greater vocalists but Taemin has the dancing skills which is more important to keep the audience interested. I find Taemin slightly more charismatic and has better stage presence, overall I would say Taemin.
Is Rain a better singer then Taemin though? Maybe I haven’t watched enough videos of Rain singing but I never thought he was that outstanding of a singer. Someone who knows Rains skills well can you answer this?