Very simply: Does Wine Country Camera actually use the same glass and coatings between their filters? I wanted my filters to produce the same results between my filter sets to reduce post-processing time. Recently, I replaced my B+W and Haida ND filters with WCC because the results between the two would cause difficulties in post as I'd work to match the output if I used both during the same shoot.
This is one aspect of the Wine Country Camera system I was not expecting at all. While most systems fit up to 82mm lens threads, the Wine Country Camera holder is able to fit lens threads up to 95mm due to its much larger size. It still takes 100mm filters, but combined with the filter Locker system that engages the rails to provide up to a 15mm larger diameter lens aperture, the adapter system and holder also places the filters closer to the front element for a shorter overall profile. The result is the ability to fit on both larger and wider angle lenses than other filter holders.
Since finding joy in landscape photography, I made the decision to try and do as much "in camera" as possible in an attempt to teach myself the art of photography, rather than exploit the science of photography, to create a photograph. As such, I slowly learned exactly what that meant and have been on the quest to acquire the best tools for me to do so, starting with a solid tripod and high quality circular polarizers. From there, I continued. I bought a set of B+W ND filters in 3-, 6-, and 10-stops. Then, I bought a Formatt-Hitech (F-H) 100mm Firecrest filter holder kit so I could use graduated ND filters, solid ND filters, and a circular polarizer all at once.