I have not tried an MF auger depth stop. Haven’t ever seen one in person, nor have I seen a Stanley.
Typically, I’m looking at 1/4 inch or larger, which means no VIX bit. I’ve wanted a depth stop on a bit as large as 1¾” in the past, usually in an attempt to keep the lead screw of the auger from poking out the back of a board.
Going to try buying a Stanley Number 49 auger bit depth stop off eBay. I saw a discussion on Lumberjocks where Kev said it worked better than the MF depth stop. If that doesn’t work, I’ll try the Stanley C575 depth stop, or maybe the MF, but I can buy three different Stanleys for the cost of one MF depth stop today.