ACF personally seeing as I have had them for over 7 years now. I have 4 of them in the same tank currently and they do well together. So long as the smallest one is over half the size of the biggest one, you should not have a problem with cannibalism. They are not aggressive, but they are glutinous, and will eat anything they can fit into their mouth.
They are also illegal/restricted in many states, so you may want to check that out before deciding on them.
Another thing to consider is their tank requirements for optimum quality of life for your frogs (or rather pipidae if we are talking about ACF). For ADF it is best that you have at least 5 gallons per frog, based on their swimming requirements and their waste production. ACF require minimum 10 gallons per frog.
Also think about filtration. ADF are alright with any manner of filtration, so long as they do not get sucked in. The ACF will not be sucked in the filter, but they are extremely sensitive to vibrations in the water and will need to have a filter that creates minimum water disturbances.
ADF will typically float around and occasionally chase potential food, they are fun to watch wen doing this. When they are full grown, they only need to eat every other day.
ACF can be taught to eat from your hand, and are quite funny when they are truing to stuff food into their mouths (plus you can feed them night-crawlers if properly prepared). When full grown they only need to eat every three days.
All in all I really think it is up to what you want to put into your pet, not necessarily what you get out of it. Both ADF and ACF are great pets, and an individual's opinion should not sway you to or from on or the other. I think you need to ask yourself these questions.
1) Do I want other fish with my frogs? (ADF depending on the fish)
2) Do I want to interact with my frogs? (ADF and ACF)
2.1) What type of interaction? (results vary)
3) How much room do I have for a tank? (A little: ADF A lot: ADF ACF)
4) Do I want one that calls? (Quiet call: ADF Loud call: ACF once a month)