I'd go for the updated definitive guide, myself. The advantage is that the page builds up SEO reputation over time. Just make sure it stays up to date, and that this is obvious to visitors. For example, either avoid including a post date, or also include "last updated on" info as well. And perhaps have a "what's new" feature at the top of the page that explicitly signals that the page is being kept up to date. That's my suggestion, anyhow.