I've been staying with Firefox not for the performance (today Chrome loads Google sites like YouTube faster), but mainly for Tree Style Tab extension. I couldn't imagine opening more than a dozen of tabs without it.
I can't imagine having more than a dozen tabs open, period. You tab hoarders will never make sense to me...
For games, I often have a bunch of wiki tabs open at the same time.
You can save all of the tabs of your current session as a bookmark folder in one fell swoop! Your research tabs can be all saved together and opened as a group! Your gift ideas that you won't close because you don't want to forget about them can be saved in a folder named gift ideas so the next time you need them you have them, without the cost of using up your extra RAM and CPU cycles!