My choice is definite:

Lang Lang

I don't like him for his flashy showmanship and dummy sensitivity. I think he is not sincere.

I like his teacher, Daniel Barenboim much, much, much more (as pianist). I'm suprised by your criticism. From my point of view he is noble pianist. What about his Beethoven Piano Sonatas? But as conductor he isn't exceptional in nothing, I think.