Apple just released version 5 of Safari. I work with Safari as my default browser since version 4. I use Safari because its one of the fastest and best integrated browsers out there. It’s not just the speed when you load a webpage, its how fast the browser feels if you open it or you open a new window or tab. It makes working so much easier.
The only thing I missed were extensions for it. Now Apple not just made Safari faster and added better Support for HTML5, they also added extensions. I could not be happier about that. Two days after the Safari 5 release there are a lot of extensions out there. You can find some on http://safariextensions.tumblr.com.
Btw, the integrated developer tools for web developers are just awesome. A lot of colleges in my company changed their default browser from Firefox, Chrome or even Internet Explorer to Safari 5.