First time at a David's Tea, ironically, it was in Toronto, CAN. I must say it was a good time and experience. There is a whole wall filled with different teas that will float your boat and suit your fancy. I got the Queen of Tart, which tasted as it name says. It was tarty, which is good for my preference. You can always ask them servers to add more sugar depending on your preference.
The huge selling point for this location was the wonderful attitude and service the employees provided for us. My friend spilled his drink literally a few seconds after grabbing it off the counter and the employees immediately apologized for our mistake. They did not have to but they even offered to clean the spill for us. My friend got another drink from the employees pretty quickly too.
Gotta say I'm a little bias for their service and they were fairly attractive too. Overall, I would come again if I was in Toronto.