This is a great curated (as opposed to catchall) list of comment improvement plugins, thanks for putting it together in one place Jeff. Sad that our front end moderation and native comment caching plugin Thoughtful Comments didn't make the list this time but thanks for your past coverage.

Like Jason, we work very hard to make sure our plugins are good team players so TC will work with most of the above (we haven't tested all of them yet so I don't want to say all).