It's no surprise Unbounce is near the top of this list -- they've actually written the book on creating high-converting landing pages. Although there are lots of amazing things about this landing page, the two that I absolutely love are: 1) The use of a chat window instead of a classic form, and 2) the detailed -- but well packaged -- information below the form.
Steps in Sales Funnel – This lays out for you, point-by-point, each page and step the customer goes through on their way to making a purchase. In some cases, it also works to point out some of the follow-up steps and “if-then” scenarios. For instance, how does the funnel respond “intelligently” to get prospects who didn’t buy to come back to the website?