Received dance sneaks last week. I bought them for zumba - used them twice so far. They are both comfortable & light weight. Makes pivoting & turning a breeze. I would suggest giving yourself a little time to adjust to them before going too crazy. The only negative is that they don't have any real ankle support.
Additionally, Bloch tends to run small. I went with the general recommendation of going up 1 to 1 1/2 sizes. I went up 1 1/2; found that it was a little too big. Probably would've been ok just to go up one size.