I prefer the sticky bomb since it has an almost immediate effect and is the most fun to use IMO. Flashbang mod to blind enemies. Lowest cooldown time of all tech skills and mods. Turret is great for distracting and suppressing enemies but it takes a little more time until it has an effect. Very useful but not that much fun to use IMO. I don't have much experience with the seeker mine yet. Takes a little more time until it has an effect on enemies. The fire mod sometimes doesn't seem to have much effect for me. Sometimes enemies catch fire and sometimes not a single one does. Prefer the gas mod so far. Love that the seeker mine follows you like a pet and makes beep noises.