I like dreamweaver b/c it allows you to code in a notepad type syntax and see how your coding relates to your page (with the code design view checked). I also like notepad (or a notepad type thing) b/c I can do anything and it won't add any garbage.. Togeter they're great... But dreamweaver for sure is my favorite editor... As said by everyone else
Dreamweaver is very good... as you add code, they color certain tags (for you benefit only) so that it makes it a little easier to find your tables, forms, and other tags... really helps for debugging when you forget/miss closing an element.
I use Notepad++ for coding because it's as straightforward as notepad but adds lots of nice colours to the text so you remember to close your tags. Then use IE / Firefox to make sure the results look like they should. For CSS I use Topstyle. I like Dreamweaver, but I don't (know how to) use many of the more powerful features.