But this gallery have both the "fancy" way of working, and is very user friendly. Some things could be improved, like make it more clear to upload, and the configuration panel is not easy to find. I've been setting up user cases to test this, and they miss that little tool button.
Then, I ran into problems with java script. Nothing worked the first time, (the solution suggested in the documentation does not work for me), I found a solution in the forums, then I upgraded the component and plugin, and the problem was there again. It is not possible to upload pictures, not to browse existing pictures. The forum is new, without the old content. My suggestion is when you are making a good component like this, is to make sure to have all the possibilities to make your customer happy (since this extension cost a bit) I'm not able to find the solution and is therefor stuck.
I give the extension a 4.5 and the support at the moment 3.