I like a check behind on turn because you will be able to extract a larger river bet against more of his calling range on the flop if a heart misses the river.

But i like a river bet, as long as you think he isn't capable of a bluff c/r or checking with a flush. Since i don't play 2/4 idk how often you would see him do that, though.

btw at what limit do you start to expect your opponents are capable of a river c/r? I haven't seen any river check/raises by my opponents in nearly 20k hands of 1/2 at Pokerstars; am i just avoiding the best players?