If many different people say the same thing about a product, it is worth paying attention. Each material has advantages and disadvantages depending on season and activity. Forums, blogs and communities create a kind of collective memory for shoppers.
If anyone is interested in real user experiences, I sometimes write short notes about the shops I test.
You can find one of the pages here:
click here
I try to look for real photos of the insoles and soles, not only the outside of the shoe. Sometimes I experiment with different materials just to see how they feel in daily life. The main things I look at for glasses are frame weight, hinge quality and lens coating. I have learned to avoid items that look extremely different in every product photo.
Just sharing my personal feedback.