My vote is for Water's. They seem intelligent, are very powerful and love to relandscape their enclosure daily. They demand respect and will decide when they will put up with the keeper and remind you from time to time by whapping you with a tail shot that will leave a mark for days! Throw in some long sharp talons, bloody forearms and a water bin that is used for a toilet that requires constant maintaince and you got yourself the perfect monitor. And who says salvators arent for everyone,,,hahaha.