Basketball shoes have lots of grip and are meant to support your ankles...so those seem all wrong for Zumba.
Have you tried dance sneakers? I think that the Ryka Transition and the Bloch Apex are the best ones.
Dances: salsa (standard/LA), casino, rueda de casino, cumbia Colombiana, bachata, mambo, cha-cha-chá, merengue, reggaetón.
Currently learning: Mexican cumbia, danzón, Cuban rumba
Dances to Learn in the future: flamenco, tango Argentino, samba, belly dancing, bhangra, ballroom rumba
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