How to choose materia for each class?

[SeriousxSarcasm]

I've heard spellspeed and crit for BLMs. For my SMN spellspeed is the biggest (can increase the amount of ticks in a DoT), and Crit/Det should be roughly equal, Since Crit Ruin III is nice, but Det adds so much to DoT and pet damage that I really don't understand the SMNs that can advocate a purely Crit build... :/

As for Dragoon? I honestly have no idea. Not many people go into the nitty-gritties of really kitting out their DRG Job. *comes back from googling*

So, STR > Crit> Det > VIT > SkillSpeed > DEX from what I can tell. Most of your gear will probably have STR capped out, so you check the crit and see if there's room for that, if not then just go down the list I guess? They say Skill Speed isn't the greatest because you can run into TP problems if your skills come up faster lol. Either way, you should probably have room for either Crit or Det since most of the time I see gear with one or the other. But which ever one you choose to prioritize (Crit/Det), there's not really a wrong answer since the both are a DPS increase. But most DRGs seem to swear by Crit builds.