Welcome to the site, Adam, and thanks for the kind words. Of the two you mention, the most active is definitely the fire-bellied toads. Pacman frogs are very pretty but outside of feeding time they hardly ever move and they spend a lot of time hiding. Fire-bellies are always doing something and most are quite bold. You'll see what I mean if you visit a pet shop/pet store with the two different kinds. I agree though, Pacman frogs do look very impressive. They're a little more fragile than African Bullfrogs, another frog you might consider that is more active but similar in requirements to Pacmans (Pacmen?).