The user "Crinacle" on Headfi has made a fantastic ranking list for 220 IEMs that he has tested (link below). Pretty interesting ranking list where an A- type IEM would be considered exceptional for the average user. Some noteworthy picks would be (in $USD):
S- Rank
Sony MDR-EX1000 ($600)
Hyla CE-5 ($950)
A+ Rank
Audeze iSine 20 ($600)
Kumitate KL-Sirius ($815)
A Rank
Sony MDR-EX800ST/MDR7550 ($350)
JH Audio JH13v2 Performance Series ($1000)
A- Rank
Massdrop Plus ($300)
Etymotic ER4XR ($350)
Moondrop Blessing ($400)
Sony MDR-EX1000 still holds incredibly value even though it was released a decade ago. I'm surprised the MDR-EX800ST/MDR7550 is ranked 2 levels lower than the EX1000 as it is based off the flagship's design. Unfortunately the EX1000 has been discontinued. The best value IEMs would be the MD+, ER4XR, Blessing and the MDR-EX800ST/MDR7550 as they compete with IEMs above $1k+.
https://www.head-fi.org/threads/crinacles-iem-ranking-list-2…
Intel Extreme Masters?