While leveling to 80 I mostly stacked my gear with with all of those tenacity materia I had left over from SB. It seemed to do okay as far as just filling in while leveling. Now that I'm 80 I'm wondering what the best materia is to socket. In SB it was crit and DH. Is that still the thing to do? Or has tenacity actually become useful now?

Thanks in advance for any info.