I tried the free version, but it really lacked features I needed (which is to be expected for a free version).

1. I couldn't figure out how to set up emailing to the moderator when there was a new comment.
2. I couldn't figure out how to make new comments unpublished by default (they all appeared published immediately).
3. I couldn't figure out how to integrate recaptcha.

I'm guessing these are likely in the Pro version, but I couldn't find a comparison between the 2.

Lastly, I'm really liking the menu system you have on your site. Is that one of your extensions?