I’d had Yoast plugin in WordPress for some time. I originally bought Yoast Premium to Jukkasoft.com in order to help me see interactive tips real-time, while editing a new Post.
Yoast felt immediately very solid and stable. Yoast packs quite a lot of power under the hood, but as with anything, the best value comes when you really stop to discover, learn and experiment with features.
There also a lot of other functionality. That’s why I decided to link a tutorial about these – here’s a good summary video of how to configure Yoast for the first time: