I used to be a firefox user, as well as a safari user, but IE 9 changed that. Knowing that chrome is from google and google kind of has a record of user privacy concerns, I avoid using it. That, along with poor malware blocking. There is even some studies that back this. I've personally have had to deal with malware that was deeply embedded into Windows 7 on some laptops that had either expired anti-virus, shoddy anti-virus, or no anti-virus. Normally, this would go to say that one should use anti-virus software especially online. But I've also seen this on some systems with IE 9 on them. Those systems didn't have deep malware that literally prevents anything from being done. The constant I've seen with those deeply affected system is the use of google chrome as the default browser. Shoot, this reminded me of a laptop that I've had to work on like three times, reinstall Windows 7 one time on it, and kept getting malware attacks. I recently read a study saying google chrome does a poor job of blocking malware, and the anti-virus being used was AVG Internet Security 2012, all up to date. Still kept getting malware, and I realized chrome was the default browser. I uninstalled it after cleaning up the STDs and idiot-proofed it. So far, I haven't had a call to service said laptop.
Now, I read the breakdown of IE 10's performance, I have to say, ehh meh. It's third, but not dramatically, just three points behind firefox. I'll sacrifice two-three seconds of load time versus not dealing with STDs all the time.
By the way, they used the Desktop IE 10 version, and didn't use the metro IE. Obviously the test needs to have its constants, but I've read about metro IE 10 being better and faster, as it doesn't have add-ons to load and it also uses a new media framework. So if you're watching a YouTube video or some other online video, metro IE adjusts the quality to keep the video going. I'd like to see a breakdown of metro IE 10, that's all.