Clamp mount or grommet mount, which should I choose?

Most arms in this category, including the HUANUO and VIVO picks, ship with both a C-clamp and a grommet base in the box. Reviewers favor the clamp for desks with an accessible rear edge under about 2 inches thick, and the grommet option when the desk has a pre-drilled hole or you want a more permanent, flush install. Check your desk thickness against the listed clamp range before buying.