I haven't used Internet Explorer in nearly 5 years, but....

[AquaCityBoy]

Opera's

If you know how to browse without being a retard IE is the best

 

[melraH]

Firefox on Ubuntu

 

[DMR]

Opera is the best browser there is

altho I use opera 11.64, for some reason 12 is buggy to me, but it doesnt matter because its perfect already

 

[yseJ]

opera and chrome

only time I use firefox is mobile version on my nexus 7 because it lets you save html pages as pdf, which is handy if u wanna read saved webpages off the net in offline mode