When you think lizards to me aside from the enclosure size, the feeding requirements are very important also.

How do you feel about feedings bugs, having bugs in your house an maybe breeding them.

Bearded dragons will required a large amount of them.

Next, heat and uv lights are to take in consideration too since it can be costly.

Personally I love BTS I think they are way underrated. They have a good size to them are easy to care for and while enjoying bugs every now and then they don't have to be part of their staple diet.