I installed List Manager on our site to provide a phone directory of people in our organization. It works very well for this purpose.
The component is well documented and the installation went smoothly. It's very cool that the Moonsoft provides an MSTester component that you can download and install to test compatibility with their code before purchasing any components.
We had one little CSS problem out of the box related to our template but it was very easy to resolve and the support team is very responsive and helpful.
There are not a lot of bells and whistles here but sometimes simple is good.
Moonsoft's website is clean and good looking. It shows that these guys have a flare for elegance.