There are two kinds of shotgun shooters in the world. Those who have had trouble with a single trigger, and those who are going to.
I much prefer double triggers. Much more reliable, and, even if one trigger acts up, you still have a gun to use on a long trip. Have a single O/U with a non-selectable single inertia trigger, and it got unreliable when a soft recoil pad was added. Been pretty reliable since the pad got old and hard, saving the time the lube froze up.
Learn to use the double triggers, and forever wonder why a single trigger was ever invented-it is an answer to a question that was never asked.
Best,
Ted