I've been having to use Chrome on Windows lately, despite FF allegedly getting better in all respects, even with a quad core i7/32GB ram/dedicated GPU system it is a lag fast due to FF not being able to use most of my ram when I have many tabs open, even when using my config tricks to make it less resource intensive. I can do the same thing on OS X or Linux with much less powerful systems with no sweat, but on Windows it is unusable for any non-trivial amount of content. It's super duper annoying as I have quite a few extensions I like on FF that have no parallel elsewhere. Chrome is not 64 bit on Windows either without using a more bleeding edge build but does not choke and die like FF does.
Anyways, I stumbled upon a Chrome extension that is pretty nice, it's Tab Outliner and has a slightly different take on the Tree Style Tabs concept.