My baby biak (i believe to be farm-bred) is a feisty little guy. He eats like a champ though. A user on here recommended injecting his food with water, and since then he seems to have lost all his wrinkles which pleases me.
My year-old Sorong is awesome. He has bit me a few times, and strikes when I mist the cage sometimes, but once i get him out, he's usually concentrating on something else and is quite tame.
My adult Aru is my favorite of my snakes - never shown any sort of aggression or anything. I believe he is wild-caught and has had a healthy dose of medication to combat the parasites. If you want to avoid that headache entirely, buy a US CBB (price is usually reflected in CBB specimens)
Even my biak's bite hurts more than my white-lip python, or any of my ball pythons, which leads me to believe that getting tagged by an adult would not be fun. That being said, I have just acquired an emerald tree boa, so I'm less concerned with GTP teeth now
They are delicate and their vertebrae are especially fragile the younger they are, so you must take care when handling them. They can hold most of their body out, but like any muscle, can fatigue and then fall from great height.
All that being said - I highly recommend buying "The More Complete Chondro" for reference. There's no reason why you shouldn't keep one!