I develop and maintain several websites, one with 150+ pages, using Coda. Coda provides all of the tools I need to develop the web pages, including support for multiple sites and excellent support for css. If I need to change content across all of the pages of a site, the find and replace feature is fast and accurate. Coda's support is good, but sometimes a little sluggish to respond. However, this has never created a major issue, because, at least in my experience, the software is responsive and stable with no major bugs. One problem: sometimes files get marked for updating when no updates have been made, but that is really a minor issue. If you need a WYSIWYG tool, Coda is not the one for you. iWeb, part of Apple's iLife, is excellent for this and actually provides very good WYSIWYG tools, even for small businesses in many cases, but not all.