If you are planning on breeding, I have heard and read that gtp neonates can be tough to get going eating. Lots of time and patience. They are also super fragile until a year of age, and many people want juveniles, not neonates. So with gtp's, keep in mind you may be hanging onto, and feeding, any you produce, for up to a year. The book The More Complete Chondro is excellent if you head into gtp's.

That being said, I absolutely love my gtp!