I think it will depend on what sort of animal you're looking for. BPs get rather thick and most colubrids stay long and slim.
Also colubrids come in some amazing colors (I'm thinking of Pueblan Milk snakes; kingsnakes, smooth green snakes and the dozens of other corn morphs.)
BPs are night active and some colubrids are day active. BPs will require a bigger terrarium in the long run.
It's worth looking around and seeing what appeals to you.
All that said, I love my ball python to bits. He's good tempered and beautiful, but his eating issues are really frustrating.
We want pics of whatever you decide to get!!
