What's the best WYSIWYG HTML editor?

I am returning to try out web design again after a 7 year break, in web technology sales, and have been using Microsoft Expression & Dreamwaever to build my sites. Needless to say things have changed. I downloaded a free copy of “Rapid PHP 2007” which allowed me to validate my code through Wc3 and was amazed at how many errors there were. The validator says that many of the WYSIWYG programs, like the ones I mentioned, leave fouled up html code and it appears to be 100% correct. There’s no way I can write my own code on notepad or Word anytime soon so does anyone have a suggestion based on experience of a free or descently priced WYSIWG editor that writes clean code? Or any other suggestions?