I've tried the high heat stuff for made for grills and stuff. It works pretty good, too. Of the two, I prefer the finish of the epoxy I linked for smaller items like bolt heads because it makes them look so crisp and clean.
But... I wouldn't use it on a coin door. The reason I decided not to use it for my mounting plates is because they came out looking like mirrors. I could literally see my reflection in them, and they looked out of place on a control panel because they were so bright. I would rather go with the dull, high heat paint for a coin door because that would look a lot more like the original finish.