I think you'd be better served by doing a lot of courses from the same institution. If you choose courses that were designed to fit together, you'll have a lot less wasted time from overlapping material or holes from missing material.
> Is it worth going through multiple university courses/books for the same topic?
What is your goal exactly? Is it to evaluate and compare everyone's materials?
If your goal is your own learning, then why wouldn't you take a more advanced course from the same institution instead of repeating a slightly different version of what you've already learned?