Opera has been my Primary Browser since 9.0. I was trying to get off of IE when Firefox hit 2.0... but I can't use FF the way I need a browser to work, and even today- FF isn't something I use. But I work on websites so I have all of these browsers except for Safari. IE8 is simply to test.
When I work on website design - *I* DO NOT design for IE, period. Webpages I put together with specifics, work 100% with Opera, FF and Chrome... IE8, looks like crap! I don't have time in my life to fix a broken browser - this is not the OLD days when IE had 90% of the market and we HAD to design broken webpages.
There are personalties of these browsers are important and Tomshardware should do a review process on that as well.
Such as:
Interface ease: Opera is super simple (not as bare as Chrome) but almost completely customizable. I modify my version to have a text Search box on bottom like Opera 8~9.x. IE8 is ugly, ends up full of add-on tool bars. There is very limited tab space. And IE8 is constantly throwing out POP-UPs into other windows.
Printing: IE does this right. Opera 10.1x and higher have SEVERELY improved compared to previous versions. But still, there are many times when Opera cannot print certain pages correctly (they tend to be MS's ASP type sites). I don't know how other browsers do. But I rarely print pages.
WebPage Saves : IE does pretty good, Opera does a bit better. Opera remembers how you want to save your pages. Firefox is a complete failure... it uses file-names that are code - rather than the page title... ugh.
Firefox has copied more and more features that Opera has had for years - even changing the tab locations. Chrome has copied Opera's SPEED DIAL feature... which rocks. (You have 9~16 home pages on a single page - its great) IE9 looks more like Chrome. Google Chrome marketing team sucks... Chrome has been out for 2 years and they're up to version 5?
The only thing Opera needs to work on is: improved Printing and severe Memory management... which in turn may improve Opera's performance in the areas it's not doing so well.
Opera rocks... give it a try for a week.