The support is friendly and quick, they really strive to solve whatever problem concerning jevents.
There are some very useful addons like "Managed Locations", the "Standard Image & File Uploads", some social features an other goodies which are not included in the free version. That's the reason why I subscribed and I don't regret it. But even in the free version, jevents works very well.
The layout / design... well, it is not quite up to date and need some "aesthetic corrections" which can be done by working directly within the style-sheets or by using the layout settings manager. That means if you want to adapt the design, it is better to know some css and to have some time to spare. ;-)
Jevents might not have the coolest design, but it is highly customizable and - apart from the excellent support - that is the reason, why I strongly recommend this extension.
They really deserve those 5 stars!