Just thought I would say
I'm afraid I don't know much about the other options.
I went for a Beardie as it is awake during the day, so something to watch! They also don't mind being handled and ours stares out the vivarium as much as we stare in!
I am a teacher for 9-10 year olds and they love our class pet, they think he's brilliant. We also have plenty of visitors from children in other classes, so a popular one with children in my experience.
I like the idea of taking your kids to have a look- you'll just have to hope they choose the same thing!!
I hope you find the one for you!