I tried both, and stuck with DO. Linode UI was superclunky when you needed to dive into it, but DO was great. Any search for how to X immediately returned great documentation.
Is “DO documentation” in this instance referring to the knowledge base of (usually really poorly written) tutorials DO got people to write for them by offering them very paltry sums as some sort of SEO play?
Slicehost (acquired by rackspace) pioneered this type of in depth how to guides for webhosting on linux. In fact many of the setup docs on DO seem oddly familiar…