I may be speaking for myself here, but the thing is that i dont need a WYSIWYG editor integrated. That's because there's a design team who do the templates and (more important) i like to keep the logic in a different layer. So when i need to do some formating or layout I simply switch to DW MX.
As for php coding am using right now php-edit. It's still in dev. state but i thought i might start using it since they are making big efforts to tune the thing up. I really like the code/class-browser.
Now, what I really dont understand is why some ppl like Notepad so much. Maybe if all the work am doing during the entire day is editing ONE really small script... Hope that's not the case for you 🙂
Maybe notepad is so good it deserves a space at the Tools Forum? 🙁