I love the color green. But that does not mean that we chose the green bus (Dublin City Tour) as our hop-on hop-off tour bus.
When we visited Ireland, we took the red bus (City Sightseeing ). Every penny (€16 per person/ ticket valid for 24 hours) we paid during the two days that we joined the city tours was worth it. With the excellent live commentary and the strategic drop off and pick-up points, the red bus was a winner. It cost more, but it comes with a tour guide and a driver rather than a driver who guides. I did my research and everything pointed to the red bus so I followed the tip. When you visit Dublin, I now also join the list of people recommending the red bus.