In short: this installs like a dream. The default layout works on most sites. You can easily put an over-ride or even customize your own theme for it. It works with KCaptcha, so a simple, clean captcha system that doesn't scare off commenters.
Gravatars work on older versions and I see they are coming for newer versions. Voting? Sure. Specialized permissions? Absolutely. RSS? Works great. Want to customize your smilies? Tree or flat display? It is all here. I've used this on some big production sites and had nothing but joy.
THANK YOU to the developer for updating this component!
THIS is really useful.