Forum worked great, inherited my chosen theme colours. Prompt, helpful support too when I had questions. Dropping a star for the instructions which could use some work - it's not obvious how the blocks should be integrated into a site's pages.

This is remarkably powerful given its price. A lot of forum requirements have been taken into account thus provided a well-rounded forum system in the C5 framework.

Support and feature requests are addressed (amazingly) quickly and very helpful.