Our boy scout troop has had pretty good luck with Quest brand canopies like this: https://www.amazon.com/Quest-Q64-Slant-Instant-Canopy/dp/B00WR7FPZ4/ref=sr_1_3?crid=N20RCWD8UCUM&keywords=quest+canopy&qid=1555426466&refinements=p_89%3AQuest&rnid=2528832011&s=gateway&sprefix=quest+canpo%2Caps%2C151&sr=8-3

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The troop currently owns two, and they have to be going on 10-15 years old. They are used probably 6-9 times a year, depending on the campout. And we take very good care of them, making sure they are setup correctly by the scouts, not stored away wet, etc.