[CardSharpCook]

I don't like 3betting the flop as there are many hands which have a spade and would be correct to cap with 14 outs. I prefer the occasional donk-bet line. However, very few opponents these days actually TAKE a free card. They raise for the free card like they are supposed to and then the "semi-bluff" the turn thinking they are playing advanced poker. It is best to know who they rare players who actually take free cards are, and donkbet them appropriately. In answer to your question, all three lines can be optimal dpending on your opponent. Another way of saying that, is that it doens't much matter what you do, all three lines are similar in EV, though some have more variance than others.