Selection of orthodontic appliances

I'm curious about the devices chosen during orthodontic treatment.

What products do adults tend to choose most often?

The metal orthodontic method is less aesthetic, especially for adults.

I heard that it is not recommended.

But I hear it's sturdy and has even more advantages.

They say the price is also the most affordable.

Is there a significant price difference compared to other orthodontic devices?

I hear it's also effective, but I'm curious if the duration is shortened as well.