Er, I use Firefox. It still has the best features. Though it needs to address the fact that it is painfully slow, compared to Chrome. I also have Opera, and I used to have Safari. Didn't download it again when I got a new computer. Too lazy.
And IE, well Internet Explorer is full of fail. I also have the Maxthon browser on hand, but I am neglecting to use it.
IE for stuff like my bank and so, because they refuse to work on FF, and I refuse to figure out how to make it, out of spite. FF for everything else, because it works.
Chrome is my main browser, but I also use FireFox for school and occasionally IE because my teachers make websites that only work on IE. I also have safari and opera because I was looking for a different browser to make my teachers website work on.
I generally use Firefox for surfing the internet. While downloading I prefer to use my good old IE6. Occasionally, when I'm too impatient I use Safari since it's faster than either of the ones that I mentioned earlier.