Cory Cats are awesome fish.
I have a 75 gal. and have a dozen Cory's. Six have a black dorsal fin and a bandit stripe through the eyes and the other six are Sterbai's. They don't care what subspecies they are with they all tear all over the tank in a school together and swim up and down the glass and clean the wood and plants. The more you have the happier they will be and the more you will enjoy them.