Hello Kristian, I am sorry I haven’t seen any of your messages come through at BulletCentral. Bix’nAndy in Austria will struggle to respond to questions in English. The largest difference between the Triggers are the pull weight ranges. The competition two stage trigger can go extremely light (5 grams), but only go up to about 650 grams (23 ounces) with spring changes. Also the competition trigger can come in an exchangeable trigger shoe option. We include a free one, but you can instal any of the anschutz style shoes. The marksmen is the same trigger but with much heavier pull weights. This was designed for the LE teams that have a minimum 2.5lb trigger pull policy. The TacSport is meant to be the all around best trigger for Precision Rifles. You can adjust the pull weights from 8 ounces up to 3.5 lbs total weight all with one screw and no spring changes. The same balltrigger reduction technology and patent is applied in all of the Triggers, and there are some differences I didn’t mention, but the biggest difference is pull weight ranges and how low you want your pull weight to go. Feel free to call me at the office to discuss more 701-371-4444 I will be in all week. Thank you for your interest! Nick Butze