Last tourny I was going for tactical objectives. I like them for these reasons:
Night Fighting: redundant night vision. But if you are against an Alpha strike army, you can commit to trying to get this trait and increase chances of Night fighting from 18/36 (4+) to 29/36. I found it very useful when i reposition into a refused flank strategy.
Infiltrate 3 units: I liked this one for playing against beta strike armies, I got lucky and had it against drop pod marines. I just took kabal units and hid them in cover away from objectives.
City Attack one: Lets you hide move veichles through ruins, really nice for those immobilization results i always seem to roll. (also apparently you cant use a venoms 5++ to save it)
What do you guys think?