I have both species, and both are very different, if kept indoors Water dragons are higher maintainance (water requirements) and need alot more room. Its true that water dragons can be flighty if not handled from a young age and bearded dragon are usaully placid straight of the eggs. Both are usaully great feeder, easy to breed and produce lots of eggs.....if I was to pick between the two I coundn't both great animals but with different requirement which I am able to provide...the question is have you got the time and the correct requirements.