I personally prefer Unstoppable to Monopoly.
They feed good, and they keep getting better all the way through. By the time they are fat, there is plenty of meat and plenty of thickness.
Our Unstoppable calves have all been good haired, but have the "want to" if you have a cooler and try a little.
Biggest difference for me is soundness. Unstoppable calves have been so easy to keep sound, and they move so much better than some of the others. We have showed many Monopoly steers, and there is something about their hip structure that can get them where they don't move good enough for me.
I have no idea what the semen is worth.