Alright, so I have a mystery plant bought(photo tomorrow). It can only be either one of these two. Those who are in the know, how do you tell them apart? I am hoping for the former rather than the latter, so I had at least tried to match the number of spines(7 or 8 tops) and the ridges on the ribs. That being said, I put a lot of effort into this in the past and managed to come up with nothing.