Glad you asked...

We've spend good few days trying to figure out which WISYWIYG editor to include. We installed half a dozen of them, looked into the code, features, design, rendering, etc. We really wanted to find something better than TinyMCE. We didn't. CKeditor is awful. Smaller/JS-based editors are way too limited. So, we've ended up going for TinyMCE again, with some tweaking. More importantly, we've added one more editor as an option and a support to install and use any 3rd-party editor see more you'd want. Also TinyMCE has a "full-screen" option to let you edit in large area.