I have two plugins for Firefox that enable me to surf 99% ad-free. I have a plugin that changes Flash objects into a button, enabling me to choose whether or not I want to load and view its contents (many ads nowadays are made in Flash), and another is an advanced image and iFrame blocker that allows me to block ads and frames from their source, instantly disallowing hundreds upon hundreds of ads. I can safely say that this has enhanced my surfing experience a hundred fold. I used to get so frustrated with all the popups and ads: now I just pwn them from the source.
Firefox is faster for me, it has nice themes, it has awesome plugins and extentions, and it has a better feel.
Firefox ftw. o/