Many of us have used the Opera browser because of its innovations and its adherence to standards. If you have avoided Opera because you did not want to pay a registration fee to remove its banner ads, your wait is over. Opera has just released version 8.50 of its browser, and it is now free of banner ads. At Opera.com you can get more information on this browser and download it for your own use.
I find Opera to be a good test platform to see if my code complies with W3C standards. And you might find that Opera is fast and convenient enough to make it your regular browser.