I would make this into a poll, but I know there will be some people using something other than IE, Netscape, Firefox, Camino, Safari, or Shiira... Anyway, I used to be pure Safari, but I have started using Shiira today. It leaves Safari in the dust when it comes to rendering speed - sometimes the difference is as much as 4x (for example - 5 seconds to render in Shiira, 20 seconds to render in Safari)! Shiira is also far more customizable, and it integrates with Safari so you can still use all your Safari bookmarks. I recommend trying Shiira to all Safari users. In fact, every Mac OS X 10.3 user should try Shiira - I'm sure some of you will like it as much as I do!