UPDATE: forget about my rambling rant below, this plugin is now GOLDEN! As the dev has responded and updated his plugin, so did I update my review.. 5 stars and all!
I want to like this plugin but... it just feels kind of hacky.
I've always used the other plugin (TinyMCE Advanced) and was happy with it, then I've decided to try this one. My first impression after activating the plugin was "OMG!" I mean like OMG both in a good way and a bad way. I was blown away by the plethora of features this plugin offers, but at the same time the plugin UI looked like it doesn't belong to the WordPress back-end. And this was my problem.
That's why I felt like this plugin hacked my site (not hacked as in attacked/stole etc.) but I just couldn't help not to notice the UI mess this plugin was making. In the settings page, there is a childish font for titles, some not-so-good-looking icons, the fact that the page is just a huge pile of options on the same place instead of organizing/splitting them into tabs (or other UI controls) for easier access, a totally unnecessary "Ultimate Tinymce" button in my admin bar, some icons in the editor are just ugly, there are redundant image banners when inserting some content in the editor (e.g. Shortcodes, HTML5 tags), and what in the world is that "scroll to top" green arrow?! it might be "cool" but it just doesn't fit in the back-end UI, plus it overlays the last items in my admin menu, rendering them unclickable until I scroll to the very top of the page to make it disappear...
All in all, the features it provides are truly powerful, and the dev is providing outstanding support in the forum, but sadly (at least for me) the overall user experience just isn't that good. Maybe because I'm a designer and focus on "pretty things", but if the plugin could just adhere to the standard WordPress design guidelines it would be much better. I think the dev tried so hard to make it different, way more than necessary.. which might not always be a good thing (I mean, it's even trying to look "different" in the plugins list page with shadows, colors etc!)
I had to go back to TinyMCE Advanced. Would love to give this one another look if it's ever going to have a redesigned UI.