Prat has been a fan favorite as far as chat mods go for quite awhile now, with the ability to change just about whatever you want with your chat frame plus some added features like item links in custom channels.
Now, from the author of Omen comes Chatter. Built with the intent of making a chat mod with less bloat and is lighter on overall system resources, it manages to do that quite well. All I ever used in Prat was the module to allow links in custom channels, so I decided to give Chatter a try. The switch over wouldn't be too hard, right? Just turn off all of the modules I don't want, leave item links on.
I was pleasantly surprised with how easily Chatter was configured. I had decent looking, functional chat windows ready to go in about ten minutes. I'll fully admit that most other chat mods probably shouldn't take me much longer than that, but things that drastically alter my UI are my kryptonite. I think that says something about how simple this mod is to configure.