Kula is another one of my favourite Toronto yoga studios. The classes are dynamic and engaging, and there is a very good, positive vibe in all staff and instructors. The Restorative/Reiki combo is amazingly relaxing.
Downsides? the change room is tiny (albeit lovely) and the studio itself gets really crowded, and very warm. Come early to secure a spot, bring lots of water, and leave your valuables at home -- there's no space for you to bring much with you into the practice room.