i am looking for recommendations for unamped headphones i can buy for less than $200. i dont want to disturb others so prefereably closed (or opened headphones but that does not leak too much sound out) thank you.

1/ do people that say that burn-in improved their headphones, made measures ( like putting a microphone before and after and compare waves on their computer ? 2/ do people that say that that burn-in improved their headphones, made a comparison with older headphones as a reference ? - my...