Assuming the following stat weights (and no party buffs):-

Dex * 1
Crit * 0.339
Det * 0.32
Skill Speed * 0.161


I have calculated the best theoretical BiS gear combination to be the following:-

http://ffxiv.ariyala.com/P9SJ
Avg: 1028.138

Dex: 643
Crit: 211.197
Det: 119.04
Skill: 54.901


However since this is best theoretical and requires an absolute perfect rotation, would the following gear set outweigh the above in terms of pure practicality? That is being better overall because it's exceedingly rare to get a perfect rotation during a fight?

http://ffxiv.ariyala.com/P9T5
Avg: 1026.504

Dex: 654
Crit: 204.756
Det: 105.28
Skill: 62.468


Would love to hear thoughts and criticism.