I agree with coding 90% of it yourself. The editors (all of them with a few being less offensive than others) tend to put in a lot of garbage that web pages simply do not need.
The WYSIWYG editors are good for locating a particular line or cell of a page, where I can then go in and alter the code to fit my needs. Using the editors to help you develop pages is nice, but using them to do all the developement is a
very idea.
Notepad may very well be the best editor of them all.
Cheers!
Trajan