How to choose agrofibre?

Hello, I’m interested in the question of how to choose the right agrofibre, neighbors and friends advise taking fiber from 40 density, supposedly it performed well in frosts. I’m already very tired of fiddling with film, and on various forums they write that agrofibre is a good alternative to film, I’m inclined to buy Polish agrofibre Premium-Agro (not advertising) intuitively trust them more than our manufacturer, please write about your experience of use, what did you encounter? What manufacturer's fiber did you buy? It’s very interesting to communicate with like-minded people. Thank you for your attention