I'm trying to settle on which browser I want to use and it's come down to Avant vs. Firefox. I'm a long time Avant user so I feel some loyalty there. I've been occasionally using Firefox since it came out three names ago. It was used to be pretty buggy and didn't render all the sites I went to properly. But now that it is released I find myself using it more and more. Avant on the other hand is built on IE so compatibility is not a problem. Feature per feature they are almost the same now. Firefox has caught up pretty well in recent months. The main difference for me, in my use cases is that Avant has a flash blocker, ad blocker, and uses IE's favorites and is lighter weight, while Firefox has the RSS live folders and is just so hot right now. What do you use?