haven't seen this one before either. most people will probably pick Curry because he seems to be a favorite among this crowd, but i'd go with Duran. Curry was good but he didn't have the movement that SRL did, which is what he'd need to beat a strong, ruthless and well trained Duran.
For once I agree with you. Curry was a goddamn good fighter in his prime, but the Duran that beat Leonard was a beast. I think he'd wear Donald down, punish him, and stop him late.