the vines only break up if all targets affected run 180* at each others (disregarding distance traveled) , as for the topic, i would prefer det > crit due to the fact :

1. crit chance is capped to 25% or 623 crit which is unobtainable because the current patch only gives us DRGs 553 crit at maximum which is 20%
2. our FULL ALL OUT BURST ROTATION which gave us the HIGHEST DPS among other jobs, have a freaking LONG DOWNTIME
3. 1 det is 33% boost to main stat which ofc works ALL TIME 24/7