There is so many amazing colubrids to choose from I don't even know where to start. Oreocryptophis porphyraceus coxi are awesome. So pretty! . All the Drymarchon's are wicked! Depending on where you live indigo's might not be an option but Cribos are for sure. Lately I've personally been focused on adding a blue beauty (Orthriophis taeniurus callicyanous) or 2 to the collection. Those are stunning and impressive animals for sure. Oh and lets not forget Spilotes pullatus and Rhynchophis boulengeri they are both very cool animals.