I tried 2 other map plugins, and this one was by far the most user-friendly and feature-complete. One of the other plugins had a horrible UI, and wasn't very clear how to achieve anything, and the other was extremely greedy, and required payment for even the simplest of features. I get supporting developers (I'm one myself), but giving someone a car, without the keys, isn't acceptable; you pay for the new rims, and nitro upgrade, not keys :D
As for this plugin, the UI is clean, the options described in a way that is easy to understand, and the flexibility is great. The best thing about this plugin, is the ability to add links (for free) to your markers on the map. I needed to make markers for restaurants and bars, and link to the corresponding pages on the marker popup, which this app allowed me to do, while others did not.
All in all, a very nice plugin, with (seemingly) great support, and a lot of great features. As long as the free version remains this complete, and the paid version brings more to the table, I'll definitely support this plugin and developer.