What’s your take on Windows e-mail clients?

Windows e-mail clients are extremely popular, but that doesn’t mean everyone has to like them. Mitch Wagner of TechWeb.com rants about his negative Windows experience.
http://www.techweb.com/wire/software/showArticle.jhtml?articleID=46802645

Do you agree with Mitch Wagner, or have you found a Windows e-mail client that satisfies your IT business needs? What’s your take on Windows e-mail clients?