So far, security has been excellent (no need for Captcha).
Support is great - I just recently needed help in adding more of my own customized CSS and I got a response within 1 hour with exactly what I needed.
One of the things I particularly like is the option to have each message include a ticket number, time stamp, or page title that the form was filled out from. This will allow us to trend what are the top-most performing pages on our site.
For someone who is really only agile in HTML and CSS and the Joomla /administrator area - this module is extremely easy to use right out of the box.