I prefer and voted for Firefox. But its close. I prefer the look of Firefox, dont ask why. I like having my bookmarks in a toolbar with drop down folders. Ive heard this can be done with Opera. I like the page info window which lets me download stuff easier. More websites work with Firefox, gmail doesnt work that good with Opera. Firefox has some powerful extensions ex) All-In-One Sidebar, TabMixPlus, WebDeveloper, Sort Bookmarks, Chatzilla, CuteMenus - Crystal SVG. I also use OperaUSB, a portable version of Opera. Opera does have its pluses: when i minimize it the memory usage goes down by ~90% Opera still goes back and forth between pages faster the scrolling is very nice integrated Email & IRC Smooth glowing buttons