As a provider with a focus on Dynamics 365 services, the Premium Plan is more appropriate. The Premium Plan contains not only all content, but also technical and strategic topics.
In the Limited Plan, the focus is purely on the application, which often limits the training of employees at system houses with only the Limited Plan.
Of course, there are also end customers who have their own development department. Even then, we recommend the Premium Plan.
Both are, however, a mere recommendation on our part.