Chipotle is a decent lunch or dinner option in the area, if you don't want to venture too far from Yonge Street. The food is always fresh and the service is fast and friendly.
They recently simplified the menu to make it easier to order and this has definitely helped. Chipotle would get four stars in my mind if the food was hotter. Quite often my burrito or salad is cold by the time I start eating.
I sometimes order off-menu and get the quesadilla, either with just cheese or adding chicken. Delicious and satisfying!