I'm a Zumba instructor, and wanted a shoe that would provide support and allow me to turn easily.  Some times the floors I teach on are so smooth that my shoes slowly slide while I'm in a squat position, and I need to concentrate not to go too low!  Some times the floors aren't as smooth and I still need to be very careful when doing the merengue...  The toe part is smooth and thin so sliders slip right off.  Overall, I love the shoe.  The gel under the heal is great, because I do a lot of high impact moves.  The smoother surface under the toe allows me to turn more smoothly than my previous shoes.  Plus, I always get comliments on them.