@Ryan Imel - Looks like you have something similar on WPCandy already but with a cleaner look and less options. I like my comment form to resemble that of a forum. I think it's the best way to encourage conversation.

@matt mcinvale - One less site in your feedreader? lol

@M.K. Safi - Pretty sure that the buttons in the plugin I'm using are styled via the CSS within my child theme so I could change it up if I wanted to but I haven't seen or felt the need to.

For previews, I use Filosofo Comments Preview http://www.ilfilosofo.com/blog/comments-preview/