I would entail this like this :

1.) Bearded Dragons
2.) Blue-tongued Skinks
3.) Gargoyle Geckos
4.) Crested Geckos
5.) Leopard Geckos

(I have never owned a bearded but I am using it as # 1 simply because of its reputation) My Blue tongued was amazing when it came to handling. I never had any aggression issues and he almost always enjoyed being out (or so I'd like to believe.) Here is a good example of what they are like handling-wise: