What MeepBeep said.
We have a gigantic and beautiful production RIR rooster that is an absolute bag of cockerals, but can inseminate a hen through a pallet fence covered with chicken wire, in the rain, when the hen is 10' away, and asleep. Seriously, I worry about my wife and daughter in that pen... But! That's the only reason he's around. We've never handled him.
We also have a amazing looking heritage RIR cockeral that is the nicest thing in the world and is by far more friendly than the hens. However, I've seen him "do his job" only once in the last 2 months. This guy was handled from day one and can be picked up at any time.
To each their own, and what you expect of your boys. Personally, I'd rather deal with hormones than infertile eggs, but we run a business that feeds us and our children.
Past that, I'd eat the big guy and let the nicer one run the roost if I had a choice.
Good luck.