I would go with a couple Phyllomedusa myself. I have some P. tomopterna of my own and they're simple to take care of and keep happy an just great frogs to watch climb around, beautiful coloration, and they're pretty clumsy, so it's fun to watch them. But whatever you decide, make sure it's your decision, that'll make you and your frogs the happiest.

Also I know they weren't on your list, but White's are always a favorite of mine. They have great personalities and are easy to take care of as well. They eat a TON though. XD;