There is no "best" editor. It depends on your preferences and workflow. All editors will let you type HTML (obviously), but some have more bells and whistles -

There is no "best" editor. It depends on your preferences and workflow. All editors will let you type HTML (obviously), but some have more bells and whistles - Dreamweaver has autocompletion turned on by default, and a WYSIWYG mode, which helps when drawing image maps, for example (the downside is that editors with more features usually have longer startp-up times). The toolsets can also be quite different (e.g. switching from Linux to Windows line breaks is a breeze in Notepad++, DW has facilities to integrate with other Adobe products, VS comes with a js debugger). Just pick an editor from one of the comments and try it (even the commercial ones have free trials).