I dunno much about balls though, but the pick of the bunch for me is the jabulani. The controversy it stirred was second to none and I don't think there's any other ball that can match its notoriety. Then I have to say that the teamgeist has piqued my interest through its design and also the fact that it was used in Zidane's last match. A match that is vividly enshrined in my brain. I can't forget the headbutt and the theatrics from Materazzi.
This is a nice and enlightening post. Now I've learnt German (teamgeist)🤗