content: The guy claims he used a lot of different materials for tests. He came back to PLA because it's the only material he tested which withstood the repeated shock impulses. I actually expected he would be using PETG. It has better tensile, compressibility, and flexibility. Which I assumed would help it roll with the punches. He said it didn't hold up like PLA. Of course you never know if this is an issue with how he is printing things. As printing PLA may be his strongest option with the settings he is using. It is usually the material everyone has nailed down first. Doesn't necessarily mean it's the best option.  But I agree with you. It would surely be interesting to see a deeper look at non-PLA prints.