Depends on how much money I have, what my plans are, what is the actual skill distribution of those TSP-s, height and many other things.
But if we are talking even skill distribution, same height and unlimited resources - you'd be surprised but I'd pick the 18 y.o.
BBB: 2 (S37 S38); Top tier: 7 (S35 S36 S37 S38 S39 S41 S63); Cup: 9 (S25 S35 S36 S37 S38 S39 S40 S41 S61)