Thanks for creating the post, it really made my day! I'm just going in circles now in the room and thinking what to do :). We already decided to skip the winter batch and go for the next, but after reading your essay, we might give it a try after all.
I tried Chrome last week, but I still think the FF has a better UX, so I switched back. My biggest problems was that, out of the box, Chrome's address bar is just plain bad. It only shows 5 possible targets, while in FF I can go through my whole history, and the most used page comes up first. I didn't really noticed that I used it that much, until I tried Chrome.
This goes for the Android versions as well. If I click the address bar there in Chrome, it will go to the edit mode, which I rarely use. In contrast FF goes into edit mode + it shows relevant possibles from history underneath.
Today I tried wunderlist and any.do as well. After two hours of playing with them I'll stick to wunderlist. It is more like Astrid, I really don't like the gesture based stuffs in the any.do. Not to mention that wunderlist has a usable website, where any.do only has a chrome extension.