There's nothing magical about the Open Pro for a 185 lb rider, but it should last 1.5 seasons or so in my experience. The DT would be about the same.

The Velocity Aerohead OC is about as strong of a rim as the OP and the DT, but its off-center spoke line means the wheel will be much stronger since there's less of a tension difference between the left and right sides of the wheel. An Open Pro build will have the NDS spokes about 55% of the tension of the DS spokes, but my Aerohead OC has the NDS spokes at ~75% less than the DS, so the whole weel is more stable.