Nonstick pans don’t hold heat well. So if you’re trying to get a sear on meat, as soon as you put the meat in the nonstick, the heat transfers and the pan temp goes down. So getting consistent browning and crust is impossible.
I’ve had really expensive pans of all kinds, and nothing has outperformed my $18 cast iron skillet. Everything from searing meat, to browning veggies, to baking pizzas and breads. Nothing compares. If it’s the Maillard Reaction you’re trying to achieve, it’s the best option in my opinion. If you prefer carbon steel or stainless steel, I won’t argue with you because the differences aren’t super noticeable. But from my taste buds and experiences, it’s cast iron.