Normally, I don't like to pay for extensions (there is such a lot of well-done free things for JOOMLA), but this is well worth the little money!
But in addition to this, I want mention the perfect service Douglas will give you. I have jcomments running on my site, and MooFAQ did not support it. So I asked Douglas, if he could make MooFAQ run with jcomments. Within less than one day (!) MooFAQ was modified and I got a plugin for jcomments. Now MooFAQ runs perfectly with jcomments.
Conclusion: the component works fast and stable, service could not be better, and the guy is exemplary co-operative.