I don’t have a set of Sinister ,so i cant give input there . What I have been playing with is Rampager and it is an effective,strong damage set. Todays patch release increased the damage considerably. I slotted Flame Legion Runes for armor and sigil of Smoldering and Strength for weapons. The decision comes when you ask " Do I want more crit for power burst ,sigil procs and traits, or more consistent condition damage."