See I have always felt that if you have to ask someone what you should get then your not ready to get any of them. Of course niles are hard to tame they have a bad rep well that goes for alot of monitors like gbasset said they dont all tame down. Some become tolerable of you. I have one water monitor that cost more to heat and keep up with then 12 burmese pythons and shes nowhere near her adult size. Shes been in her cage now for 3 months and already outgrown it and in need of a larger enclosure.