There's been a lot of talking up of Firefox and ignoring Chrome. Chrome will also backup/sync your bookmarks (and all Chrome settings, installed extensions, open tabs, etc) with your other devices. I find Chrome faster than Firefox too.

NOt that it matters to the end user, but Chrome's multiple processes are I believe part of its vaunted security sandboxing, to make it difficult for rogue developers to write code that would affect other parts of the browser or your system.

I'll get off my soapbox now.