I think Google Chrome is a great browser and I use it on a regular basis. At the moment, I think their built-in developer tools are superior to those in Mozilla Firefox and the process sandboxing works better. That said, Firefox has the killer Awesomebar which kicks Google’s Omnibar out of the water and the ecosystem of extensions is a strong card for Mozilla. In my opinion these two browsers, which are the common choices for people especially in tech, are head-to-head when it comes to features.
As you see, I consider Firefox and Chrome to be more or less equal when it comes down to features and performance (and I could very well add Opera and Safari to the list). That brings me to the idea behind the browser, what drives the development.
I believe the Internet should be free and open, and because of that I prefer to support a browser whose only interest is promoting a free and open web. Can we so easily separate the tool from the idea? Can we really trust that commercial interests in the browser market will not spill over and influence the web? My answer would be no, because it is only reasonable that Google’s bottom line is an important factor in the future development of Chrome.
That is why I choose Firefox.