Honestly, forget about any kind of list like that one. First because you don't know who wrote, which variables were taken into account and if they had an interest in putting some vape first. The SSV is totally different from the Cera. When you are buying a jeep, you don't compare it to a truck do you? I think you will like the SSV very much. It is easy to indulge with that one.. not like your PD. If you want a PD like vaporizer, check the Underdog/Wychwood/HI/Hot Pod. If you have specific doubts you did not find the answer using the search engine or reading the threads, make one at Ask FC.