I used my M&p15-22 outfitted with a Franklin Armory BFS-3 yesterday.

I set up a 'jungle walk' shooting range consisting of a 85 yd trail through the woods with 11-14 targets on each side of the trail set at different depths. The setup is so that I walk a few yards, fire, walk a few more yards, change shoulders with the rifle and shoot the alternate side targets.

The first 8 passes I used the regular semi trigger setting.
Then I made a few passes double tapping on the regular semi trigger setting.
Then I switched the trigger to binary mode and ran the course double tapping the targets. It definitely makes those double taps more accurate because it requires half the motion of the regular double tap.

My binary double tap groupings were typically much tighter than the semi-trigger shot pairings.

I consider that increased accuracy worth the price of the trigger, and that is one thing these triggers accomplish.