Quote Originally Posted by NefGP View Post
Wow could you be any more wrong if you tried?
All of them have their uses, though Skill Speed is terribly... niche. It's best to consider the relative value of things:

Determination (DTR): Decreasing relative returns with main damage stat (STR/DEX/INT), decreasing relative returns with itself. Affects all hits, especially valuable for autoattacks, no increase in resource drain. Focus stat for MNK, WHM,
Critical Hit Rate (CHR): Decreasing relative returns with itself, decreasing relative returns with all crit boosts (which are all flat bonuses). Effects are random, increases LB gain, no increase in resource drain. Special value for certain abilities (e.g. Adloquium with it's doubled shield potency on crit).
Skill/Spell Speed (SSPD): Increasing relative returns with self, other SSPD buffs. Does not affect DoTs. Does not affect autoattacks. Increases resource drain. Can meet certain breakpoints. Increases attack-rate-based resource gain (only Wrath stacks at this time).

DTR is a focus stat for jobs built around autoattacks (MNK) and also has high value to jobs with low damage stats (PLD). CHR is good for jobs with high damage stats already (DRG) or those with special crit bonuses (SCH, BRD). Spell Speed is good for BLM mainly due to having infinite MP and low DoT portion. Skill Speed is good for meeting breakpoints to get off an extra hit under an effect, which is pretty much just MRD/WAR and nobody else.