Open pro for sure.
I've ridden both OP and aeroheads, as well as many other rims, and while they aren't as beefy as a deep section rim like a cxp33 or deep V, the OP is plenty strong and nice and light. the aeroheads are a bit lighter but did not hold up to street use for me, I don't like having to true wheels all the time. remember, build is important!