I'm not sure what I'm
I'm not sure what I'm reviewing, since the email did not specify and I bought more then one so I'll write about both.
The PM vnd+cpl is nice. I love the color render and nd function. I like the intuitive cap that makes it easy to remove and install. The downside is that it scratched way too easily (collents scuff marks for breakfast) and I'm very careful with my gear. My b&w filters are twice as old and more used and they still look brand new. The second downside is the polarizing rings gets super stiff over time to the point where you need to wrestle it. It's also too bulky for Nikon lens hoods, I can never use them together. Otherwise I'm very happy with it.
The quartz line cpl is alsoa great filter, and I've only recently bought a couple of them. The initial tests are fine although I believe there's a pink-green tint change when rotating the filter which is very annoying in post. It can also get stuck on your lens and then you need a special tool to remove but overall it's a beautiful filter