Both of the Males i have are very good snakes. One of them is in a 12 quart container and the other is in a completely setup vivarium with plants, bamboo, a humid hide, and cypress mulch. They both do great and as long as you have a hide with some nice moist sphagnum moss in it, almost any terrarium will work for them.
Both of my males are also very sweet, but i do know how some babies can be nippy when younger. It's just a size difference issue. When their babies, they are tiny and humans are large, so instinctively they are supposed to defend themselves by striking a biting.
Then again this is pretty common knowledge with ANY SNAKE, so it doesn't really mean much.
Case in point, BRB's are beautiful, easy to care for snakes that DO NOT get the respect they deserve and are a great pet to own. Also they are perfect size getting between 4-7 feet in length.