Like probably many others, I would like to purchase an IEM, which best suits my preference, which seems impossible without buying/listening/trading too many IEMs. There are some great reviewers like Hawaian Bad Guy or Crinacle - each providing measurements - and there is the harman target curve(s), but while those offer a great jump off point for a first time IEM purchase, none of those suit my (and many other’s) personal preference/personal target curve.
What is the best way to create a personal target curve (based on equalization of an IEM, that is already in my possession) and find a matching IEM based on all the measurements provided by reviewers?