My main reason for Opera being my favorite web browser for Windows 8 is because it can run flash video sites like YouTube, Vimeo, and Dailymotion without slowing down my computer with only 1 GB of RAM, and onboard video which means I only have about 900 MB of free RAM to use to run Windows, background programs, and applications like Opera 12.11 because 100 MBs is being used for my onboard video on my motherboard. Opera also seem to use less CPU percentage then other web browsers like IE, Firefox, Chrome, etc which I tried on my old 1.8 GHz CPU.
I notice I experience a lot less slow down and crashse in Flash and interactive sites with a lot of videos, moving objects, and web apps on it compared to the latest versions of Internet Explorer, Firefox, and Google Chrome for Windows 8.
I also like Opera because it has a modern user interface which looks better then the basic user interfaces found in Firefox 16, Internet Explorer 10, Chrome, and others which seems less modern. Also, Opera has a search box on the toolbar, and in the new tabs page which make it convenient for me to search online with Google, Bing, and other search engine websites quickly. I can also use the address bar to search, or press F2 function key on my keyboard to launch a search box/address bar to search on.
It is also very easy to remove buttons from the toolbars in Opera, and hide toolbars like the Status bar to make Opera look more simple. I also like that I can easily position my address bar, and my tab bar to the bottom of the browser to give the allusion of having a bigger monitor since I rarely look at the bottom of my browser when I read online.
Opera also has a lot of nice themes for the browser which is created by the Opera community. There are also a lot of add-ons and extensions for Opera which give more functionality to Opera like the ability to download flash video from YouTube.
There is a bookmark sidebar in Opera which I can use to quickly go to my bookmark page by clicking on the bookmarks button in Opera.
Opera also has Opera link which can sync all your bookmarks, speed dials, and other settings, so if you use another computer, phone, or tablet with Opera on it, you can access all your links after you signed in with your Opera links account.
Turbo Mode in Opera is useful if you are on a slow network, or you are on a limited bandwidth ISP where you can only use a certain amount of bandwidth like 500MB of data per month. Turbo mode compresses images, and other web page objects, so you use less bandwidth while also making your page loading time faster because you have less to download after Opera compresses your data to send to you.
Opera is also available for older versions of Windows like XP-7, Linux, and Apple OS X.
You can download Opera at http://www.opera.com/