waterdragons are too skittish. Goulds are like any larger monitor, gotta be really careful I've handled some pretty quiet mertins though. Accies can handle ok. Angleheads and Boyds.
I actually saw Tim from URS on TV with a very calm perentie in his hands, he was even going to let the presenter hold it.
Some monitors will let you handle them as far as to say they dont claw, bite and crap on you.
There are heaps of skinks and dragons that can become used to handling too.