Terminal sire. You are not keeping any heifers to retain?
My terminal sire provides me with the cross that my show steer buyers want. Also provides me with a quality and consistant product for the feedlot. Which is after all, where a terminal calf will end up.
My area likes quality. But quality black sells better than quality red. So, I use a black terminal sire. Also because I'm lazy, my choice for a terminal sire will throw a polled head most of the time.
Also need to be thick to appeal to the steer jocks and 4-H steer buyers.
I lean toward a composite bull that will toss out a average size calf but grow them off well too. Also needs to compliment your cows attributes and correct their faults. Every cow has a fault.
Most of your choice for a terminal sire will depend on your location and what kind of market you have.
But any sire needs to be sound in every way so you get 100% of your cows bred and a calf crop on the ground.