We selected the Dance Shoppe for our three year old daughter. After checking out many dance schools in Milton and Mississauga; we felt they were the best choice for what we were looking for (class times, studio, teachers, etc.).
I would suggest to visit each of the studios and speak to the owners as well. If your child decides to pursue dance as they get older, it will be a large expense both financially and time wise (I danced for 10 years as a child and remember the # of hours I spent at the studio

); so you want to ensure the dance school you join is one both you and child feel comfortable at.