I did run into a few problems with the component. So why would I give it an Excellent rating? The developer of the component was extremely helpful and found a workaround very quickly. Plus, he told me that he would work on a total fix before the end of the week.
He provides some of the best support I have seen with an extension from Joomla.
Is this component worth the money? Absolutely!
I did have one problem that Mike Reumer (the developer of this plugin) emailed a solution. I had a small problem with white text showing up on the white background of the information window. Most people who have black text on their site would never even have this problem. But Mike showed me how to add a div tag to solve the problem.
Do not hesitate to use this plugin, I have used it on many sites and it has always worked in every browser I have used (this includes the browser found on an IPOD touch).