I've mentioned Firefox before, now it's been officially released and you can get the latest version. It is not currently subject to any exploits, and I think this is one of the major reasons a lot of technical types like it.
If you want to know what I think AdvisorBits looks like most of the time, you would look at it in Firefox. ... even though I take great pains to know it renders on several platforms and browsers within a few pixels. You are free to use any browser at AdvisorBits.
(update 11/11: I saw it today in IE 5.0 Windows. I guess I was wrong about any browser.)