Buying chaps by brand name is not the way to go. It's like coming on here and asking what vehicle should I buy to haul firewood. Someone answers "buy a Dodge". Then I buy a Dodge Magnum. You might ask what kind of protection you need, like material, fabric, coverage, layers of felt/fabric. Is the price of the chaps important? HTTR recommends PGI chaps. Good choice, those are what I wear but I need that specification for wildland firefighting.
I will say after using Stihl and Husqvarna chaps (supplied by my employer) that both are very poor quality. But, they are cheap and better than nothing.