IE6 support can be made reasonable for most apps as long the client understands that the IE6 support will be usable, decent looking, but not 100% the same look

IE6 support can be made reasonable for most apps as long the client understands that the IE6 support will be usable, decent looking, but not 100% the same look and experience as with more modern browsers. You just need to explain to the client that they don't want to blow their budget wrestling with nit picky white space inconsistencies.