I love the tiny ADF's - the more pictures i see, the more I want some in a tank. I'm currently on a snail kick but might be adding ADF to it. I talked myself out of ADF when I first got my big tank and I don't remember why now.
I love all things tiny, tiny in the aquarium. My boyfriend laughs at me because the smaller the fish is the more I like it. Smidge is so tiny, I don't think we have actually seen any proper ADF's in the pet store where I have looked. I bet they are the ACF because the ones i have looked at are easily 3 times as big as she is.