Overlooked here and elswhere in the hobby, the shovel nosed snake (Chionactus sp.) from Arizona and nearby areas,is primarily an insectivore feeding on a variety of prey. Crickets, centipedes, scorpions and spiders are taken. They are quite variable, but most have a tri-color look and are very pretty. They are not expensive as a rule either. I think I would recommend them over a green snake even though I have kept greens in the past with good results. The shovel nosed snakes are a bit hardier in my opinion and are more accomodating to a handler.
Just another 2 cents.