Wow, eleven tanks. That is going to be a lot of frogs. Im working on my frog rack which will be nine tanks. Out of the frogs you mentioned I would say Auratus would be the best beginners. They are not as big as some of the other darts and would work in a ten gallon tank. I have a pair of Auratus and really like them. I have heard that Auratus can be shy but I haven't experienced that with my two. Every time I look into the tank one of them is always visible. I can even open the tank to feed them and mist and they don't run. They don't care if I watch them. As soon as you get your feet wet thumbnail options are endless. Eric has some Vents that he says are very bold and active. Mike said his Vanzos are bold for him. Then of course you have the imitators. They are very cool and are often mentioned as beginner thumbs. Make sure you see the size of the thumbnails before you just order them. Pictures of thumbs are rather deceiving. They are very tiny in person so just make sure you know what you're getting into. I would not put more than a pair of anything in the ten gallons. If you have the opportunity to get some larger horizontal tanks it would give you some more options. Some of the more bold darts are larger and would need bigger tanks. I've got Cobalts, Azureus, and Leucs. They are all bold and active but again would require a larger tank size. If you're going to get into darts you have got to eventually try a pair of Cobalts. I can't stress to you how active and bold these frogs are. I challenge anybody, even Eric's Terribblis on activity level. These guys never sit still. Anyway you got a lot of options out there but you are going to miss out on some really cool ones if you limit yourself to just the ten gallon tanks. Hope this helps.