Reasonably priced, comprehensive and fun. The Hop on/Hop off is a big plus. I only had a few hours in the city (airline layover) in this was a perfect "turbo tour" of Hong Kong. If you have limited time or just want a quick intro to Hong Kong put this on your list!

Really enjoyed the hop on hop off experience in hong kong especially the stanley road green bus route. Stanley markets was not a disappointment. Really friendly staff.

If you are visiting for a short time and want to get an overview of the the entire city of Hong Kong, the Big Bus Tours Hong Kong, is an inexpensive and efficient way to do it. Make sure you buy the 48 hours ticket which includes free tickets for Star Ferry ride from Kowloon and Hong Kong; Aberdeen Harbor sampan tour; visiting 3 sections including Stanley Market and hop-on & off feature in designated areas of the city. Downside...drivers are sometimes not sync with the voice of the recording describing the attractions and drives faster than he should. However, it is worth the experience for overview of the city!

We wanted to see as much as we could of Hong Kong in the short time we were there. We have previously taken open bus tours and enjoyed them, and this was no exception. We did the city tour, and then the green tour to the south of the island. I'd have preferred we hadn't stopped at the amusement park on the way south, but the views of the coves and beaches amply made up for that.
We took advantage of the included Victoria Peak tram tickets as well as the Star Ferry, and hopped on and off, when we wanted to.
The buses were regular, and perhaps my only criticism is that their suspensions were rather hard, which at times made for a less than comfortable experience. But fun, anyway.
Fortunately the weather was fine, and though on the open deck it was at times a bit chilly, there was plenty of room to move about.