What do you use? Some things are still a bit hacky, but it all comes together for me. I had everything packed, ready to move, but than came the ports :)
To be honest I have not switched yet, but the changes I have seen in TreeStyleTab make me question why I should stay at firefox with that because I can get the features of the new TST in Chrome as well. Also I won't work with Colorful tabs anymore. Further I think I will miss some of the decapriated features in the Zotero update.
(And I will have to find appropiate replacements for Leechblock and FireGesture)
What "TST in Chrome" are you referring to? Tree-Style Tabs are one of the main things that keeps me using Firefox over Chrome. All of the Chrome Tree-style extensions that I have tried are these hacky things that use an external window.