(This post consists of biased personal opinions, as always)
I installed IE8 on my windows partition tonight. I haven’t used it enough to do a full review or anything. I don’t expect IE to return to the Mac any time soon, so I don’t really have incentive to try it. I stumbled upon this video on Microsoft’s site regarding browser speed. The video consists of a lot of flashes and text flying around to techno music, so I’ll save you some time and summarize:
Everyone talking about browser speed seems to think that micro-benchmarks are important, but those benchmarks are just made up and regular people have never heard of them anyway. The real way to test is in the load times of popular websites.
They then show load times from IE8, Firefox 3.05 and Chrome 1.0 on popular sites. As you might expect, IE8 did pretty well. They conclude that “IE8 is fast just like other browsers”
Internet Explorer: 5753ms
(click the links for a more detailed breakdown)