I've never really noticed a difference in browsers speed wise. Sure some load pages faster than others, and some have issues with certain pages. But in the end they all take me to the same place. I use Firefox 95% of the time at home with adblock+, if I encounter an issue I clear cache, if it still has issues I switch to IE 10, usually this is all I need to do but once in a while IE has problems with a page and I just move on to something else. At work I'm stuck using IE10. The speed of a browser can also be affected by other factors like the speed of your connection, how many devices are on your network, what tasks your doing on the computer at the same time like gaming, downloading, streaming movies (netflix, hulu), and your hardware. You're not going to get much responsiveness on a 5yr old celeron w/2gb ram and Win XP while you're downloading a game, watching youtube and the A/V suite scans your computer in the background, and there's 5 other people all sharing your 10Mbps network. Which describes probably 50% of the users out there in the real world.