Are you planning on breeding later on? If so, you might want to look at snakes that could produce offspring you're interested in with one generation (for example, if you got a het pied to breed with another het pied, you'd get pied babies in just one generation). I think sometimes new breeders get discouraged when initial projects fail to give them the kind of offspring they were looking to get.

If not, I'm just going to echo everyone else and say to get what looks best to you. After all, they all pretty much act the same and spend most of their time trying to hide from you lol