The Browser wars - a new version

Just a couple of years ago, it seemed that the browser wars were from a different era. After the initial clashes between Microsoft and Netscape and the victory by Microsoft in these wars (ignoring any possible challenge by the nascent Opera at that time), the era of the Browser soon stagnated. Microsoft puts development work on a new version of Internet Explorer seemingly in cold storage.
And then came in the 2 aspects that changed the game: The emergence of Firefox as a strong contender for the title of the most popular browser (it helped that it was seen as a better and more standards compliant browser + a number of add-ons started getting developed for the browser); the other major game that has changed the rules was the emergence of Google as a company that makes most of its money from ads (with most of these ads coming in from the ads that appear when a user makes a search). Now it seems that the competition is hotting up, with Opera and Firefox releasing new versions, and Microsoft currently working through the public beta. Already, the release of Opera and Firefox has lead to an evaluation of which is better, and the answer depends on which way you look at things of Internet Explorer 8:

Firefox 3 is, of course, the big news of the week, pulling down eight million or so downloads in its first 24 hours in the wild. However, the Opera browser updated to its much-awaited version 9.5 last week. Empirically, the two most-cited complaints about browsers are speed and memory.
Using the SunSpider JavaScript test, Firefox 3 scored around 5500 microseconds to process the tested scripts, with a margin of error at around three percent. Opera 9.5 scored about 7280 microseconds on the same test, with a margin of error around 1.5 percent, making it nearly one and a third times as slow as Firefox 3.

And we have not even included the effort by Apple to make the Safari browser more mainstream, depending on the iPhone bundling Safari to really give it a push. The winner may not be the best (and anyhow, it depends on which test you use).