Personally I just use basic IE 6 on a regular basis for my web browsing - it's the most leniant when it comes to how to display code and shows just about everything.
I use Opera, Mozilla, and Netscape only when I want to view a site I have designed in other browsers. It's not that I don't like these browsers, it's just that I'm entirely used to IE and the way it works, and frankly it works fine for me.
But seeing as what I'm saying has absolutely nothing to do with your question, I haven't used any, but I hear great things about Avanat. Check that one out.