5 Det = 1 main stat
4 ss/crit = 1 main stat
From the BLM calculator https://docs.google.com/spreadsheet/...TDVkM1E#gid=58

SS pulls ahead in fights with frequent in combat stone-skinning. Also need to weigh in crit overhealing (can't control when it crits) and spell speed creating mp issues.

Here's my BiS list:

Head: Myth SS/Pie
Chest: Myth SS/Pie
Gloves: Myth SS/Pie
Belt: Allagan SS/Pie
Leg: Myth Det/Pie
Boots: Allagan SS/Pie
Neck: Allagan Det/Pie or Myth Crit/Pie
Ear: Titan SS/Pie
Bracelet: Allagan SS/Pie
Ring 1: Allagan Det/Pie
Ring 2: Garuda SS/Det