Soooo many options there, it depends how you work, and what you like.
I have six or so vintage Stanley 77 type Marking and Mortising gauges, and I just don’t like them. They’re beautiful, but just don’t give me satisfaction of a job well done. Probably me, not the tool
I gave a few disk and round beam type, and they seem to work better for me. I don’t have any of the fancy micrometer adjusting ones. I even have one with four beams on it. Most have the wheel marker, one may have a knife blade
I also have am Incra ruler, which was my go to for a decade, with the 0.5mm pencil.
MOst used marking knife is currently a spear point one sided bevel, skinny one, have both Hock and Utilitas versions. I also have a bigger Hock violin style, single bevel, flat on my left when pulling towards me.