Ed is, in my opinion, the sports car of HTML editors. It's small, it's fast, and, in the hands of someone who knows how to use it, it really performs. That's a promise.
Paychecks are a wonderful thing.
There's nothing more irritating that pulling up a page on your 1280x1024 desktop and realizing that some idiot wrote it so that it would only use the left half of the screen. Sure, some people don't, but there are a ton of web pages out there which just don't work as intended. These are nice if you already use the editor extensively and are familiar with them. The dialog I just mentioned also has the nice habit of detecting the size of an image and putting the proper height and width tags with it to speed up loading of the web page you are creating. It seems that other programs may appear a little easier to learn, but if you're doing any serious amounts of editing, HTML-Ed becomes a minimal effort way of doing things.