This can be almost a religious war with some folks and for the most part is a matter of preference. I have used IE almost exclusively since ver 6.0 came out. I do so for a couple reasons the biggest of which it is installed with my OS. Also, since the vast majority of users on the web use IE most sites are developed with IE in mind and will pretty much guarentee you will be getting the most out of each site. That in mind one HUGE gap IE 6 has is a lack of browser tabs (which rock). I jumped to the Beta2 version of IE when it came out which IMO is awesome however, since it is BETA it is not generally supported by a lot of sites althought 95% of the sites I hit work fine with it.