I've been using Safari, Camino and Firefox on my MacBookPro since I unboxed it last September. I find all three useful in their own way.
- For general browsing and learning more about web design, I like Firefox. It provides the most plug-ins for looking under the covers, more web sites work with it's underlying Mozilla/Gecko engine than Safari's WebKit engine, and it gives much more granular control over cookies and privacy than the other two
- Following the advice of the founder of PHP, Rasmus Lerdorf, I no longer visit secure web sites in the same browser in which I do general web browsing. It's amazing what crackers can do with iFrames and javascript. I use Safari for my banking, financial and other secure needs
- Camino is a great, fast browser, though I find that Firefox v2.x is just as fast, whereas v 1.x was much slower than Camino. I use Camino for my non-general, but non-crucial secure web browsing: shopping, for example, or sites that I might visit under one identity as a user in Firefox and as an account administrator in Camino - to keep the cookies separate. I also use Camino for secure sites that haven't been designed properly, and thus don't render correctly in Safari.