There is no BEST browser.
You must choose which you'd like based on what you consider good.
Here's some info you can use to select the web browser.
*Note* I'd like to tell you now, Google Chrome is OUT OF THE QUESTION! Every browser listed below surpasses it in every way.
Popularity.
Mozilla Firefox is the most popular browser out. There's people who will say, 'no. internet explorer is'. There partially right.
The most common web browser found is Internet Explorer, for one reason. It's preloaded onto PCs. If you're looking for popularity, go with Firefox.
Pros: There's thousands of themes, and plugins. It's also one of the most reliable browsers you'd ever use.
Cons: It's not the fastest, or best looking.
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Design.
If you're looking for design, the only choice you should even consider is Safari by Apple. I'm sure you know of Apple's design intelligence, there the best design and graphics artists in the world. Just look at the Mac!
Pros: It's the best looking browser you'll ever find!
Cons: Safari for PC's have numerous bugs, to be honest. It's not the fastest web browser, your bookmarks and most popularity pages may disappear, and since it's running windows tasks you may lose browser connection.
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Speed.
Opera is the world quickest browser ever programmed. You'll zoom from pages faster then you'd ever experience. Not only that, it's VERY durable and has awesome downloaded themes and plugins.
Pros: It's speed is absolutely amazing.
Cons: It's not all to good looking, and the popularity of it may effect some pages you view.
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Finally, Durability and Virus prone.
Internet Explorer is the most durable web browser possible. not to mention the time it's taken for people to program it. Frankly, it's stable as hell, but it's a horrible browser.
Although, it's the worlds best virus protected browser (WITH EDITING!)
Visual basic programmers like myself can look through it's code, and automatically see how well you can protect yourself with it. If you don't know VB programming, don't even try to use it.
Pros: It's a very durable browser
Cons: It's a crap look, and horrible speed.
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Good luck, I really hope this helped you :)
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@Elana
Internet Explorer BY ITSELF is very prone to viruses, maleware, and harmful things that can enter your computer.
However, if you know Visual Basic, you can modify the code to stop it. When I said it's the best browser to detect and stop malicious things, I meant with editing done. Internet explorers code has the best setup without any doubt. (Look through it for proof).
You're right, though. It's no good without any programming done.
Thumbs up :)