The reason there is no clear answer here, is just that. If you are more specific as where you are going to hunt, that would help. All the limited entry elk units are spike/cow archery, and there are a couple any elk units as well. If you are archery hunting, you will be buying an archery elk tag that is good for both types. Just know where you are as if you shoot a big bull in a limited entry unit it is considered poaching. PM me with what unit you are going to hunt, then I can tell you if it is spike/ cow or open bull. I would hunt CO personally, but that's just me.