Just took the tour with Chariots of Fire yesterday. I saw the ad in the Where Magazine at the hotel. Initially I'd reserved the Niagara Falls tour with another company, but after reading some bad reviews on TripAdvisor, I cancelled my reservation and decided to go with Chariots of Fire the night before the tour. I was very glad that I went with them instead.
Our driver Joseph was very comical and knowledgeable. We had a bus full of people, which was a good sign. I thoroughly enjoyed the day trip to the Niagara Falls, the Clock Garden, Niagara on the Lake and the winery.
I highly recommend Chariots of Fire to anyone who wants to get a glimpse of Toronto. And the fact that they were so accommodating by accepting my reservation the last minute was pretty impressive. Definitely 5 stars.