I still don't know why Avant Browser hasn't caught on. It's by far the best I've ever used. It may have some of the security issues IE has, but it is far better designed than Firefox, and much more useful than IE. I think its still more heavily downloaded than Firefox on download.com, yet in the media all you ever here about is firefox as an alternative to IE.
And you know how I love media darlings. (sarcasm)
Could be that it's because Avant is a front end overlay to IE which still gives you all the security flaws inherent in IE.
Firefox is totally separate from IE and does not rely on anything IE.