I've been thinking a lot lately about my preferences and how to pin them down to a concise description. I see so many reviews with the reviewers showing there preferred frequency graphs. So I picked 10 of my favourite iems ranging from sub $100 to $1k plus only to find many different sound signatures from Harmon 2019, nuetral balanced to basshead. I don't have a preferred frequency graph. My main preference is.. iems that give me goosebumps. That make my music pleasurable. I'm eclectic, I listen to many genres with over 50,000 tracks spread across many sources all with different dacs.
Being tied to one signature/frequency graph just isn't logical for me it's what album, iem, source combination plays music to give me the required emotional response.
