if you want a box cutter to open up packages, my favorite so far is the starrett S011 hidden edge. i love this thing.
https://www.amazon.com/gp/product/B0000DCBOH/?tag=atomicindus08-20
the blade is spring loaded and pops out when you squeeze the 'trigger'.
the blade protrusion is also adjustable. i have it set at a shallow cut (about the thickness of a normal cardboard box) to make it difficult to accidentally cut the contents of a package.
idk how it would hold up in a production environment. it's got a lot of plastic in it. but for home use, it's fine. i keep it by the front door and open all my packages with it.