You now have the two most common types of scop
The sunken areole one in the second photo is the most photographed, and the most common scop in australia.
The exposed areole ones you just got are the most common north american clonal line. It can have 1mm long spines that you can feel if you grab it, but generally wont pierce skin. These spines are still in line with the original species-founding official description of scopulicola.
I havent grown the sunken areole 'belly button scop' but I do have the exposed areole form and they sure are growers. In full sun with lots of heat and seemingly dangerous amounts of water and fertilizer they grow like corn and get seriously fat.
If you encounter what looks like a scop but with PC looking spines, that would be Trichocereus riomizquensis. It sometimes gets sold as a scop on ebay.
Now get your two scops to flower and breed those puppies!