I heard that SeaMonkey's Composer was good, so i set that up and found it's ok. It doesn't give me the same degree of control i'm used to in a code editor (sometimes adding tags is hard), and my main use case was one giant table on my site (56x24 cells) that's hard to edit in a normal text editor. SeaMonkey does work for that, but it also inserts some nonfunctional (but harmless) junk code, and changes how my code is indented in a way that i just found too messy for when i did edit the page in my usual code editor (Bluefish).
I think SeaMonkey is just ok, but i have not tried any WYSIWYG HTML editor, so maybe every other one is worse and i just have impossible standards. It is free, so it's worth a try. Just bear in mind that it has not been updated in a while (i think), so outdated security could be a concern if you use it for any online stuff. But just editing local files works offline.