Based on my own experiences, I would expect Ultrastik to be superior. I have three of these for my MK3S printers and I absolutely love them. They stick very well and the prints are easy to remove. They also create a fantastic textured first layer. The Ultrastik is a product of FilamentOne The BXZAMD is a Chinese product that primarily sold via Amazon. I am not familiar with the company but bought one to test and review. printers. I am open to testing them without bias so here we go.