Best add-ons (e.g. Ad Blocker Plus does not only hide ads, it also prevents them from loading and thus makes it faster!)
Fast
Transparent, intelligent and enjoyable community
Doesn't send data to a company (Google Chrome does send your searches to Google)
Endless customization
I use chrome and firefox at the same time. I usually use chrome for almost everything while I use firefox when watching videos cause the flash player sometimes crashes in chrome.
Firefox.
Chrome is okay, but i barely use it. And Safari annoys me.
But whenever I see a computer than ONLY has internet explorer...i die a little inside. I know it's the classic and all...but it's just a terrible browser that's like a magnet for viruses and pop ups. The others block that stuff. lol.
Oh and I've never heard of Opera