After running for awhile, Firefox slows my entire system down to the point there is a 250ms-500ms delay for every key press.
Despite all this I keep trying to make FF my primary browser, but wow it is hard.
I'm actually using Opera as my day to day, it has hotkeys that are just a little bit better than Chrome's, backspace still does what I'm used to it doing (going back a page) and the "jump to last tab" hotkey is super appreciated.