Today I tried the latest browsers from the Mozilla.org (Mozilla and Firebird), and yesterday I installed the latest Opera browser*. I'm amazed at the quality of these modern browsers, they are so fast and feature complete, with excellent standards support that I can't see why anyone in their right mind would use an insecure, slow and sub-standard product such as IE. I've not used a khtml based browser yet, but I gather that they are rather good as well.
I borrowed Zeldman's book on standards based web design, to read this weekend, so I can do my part in push in the web sites I can influence towards a more standard based design, with less browser sniffing, complex, bandwidth wasting non-standard code and markup.
* Interestingly Adobe use Opera as the built in browser for the latest version of their In-Design product, and Macromedia are using Opera for the next Mac version of Dreamweaver.