If I were looking for a sound signature that was as close as possible to the sound I would hear if I were in the recording studio as the recording was being made, or in the engineering booth during the recording or mixing session, what description would I look for? (Assuming that the mix was being made to top listening standards rather than being optimized for what it would sound like through an AM radio or on a dance floor.) I always figured that was "natural" or "flat" - closest reproduction to the way the artists intended it to be heard.
Cheap: Ety MC5 (from FR and impressions)
Bit More: Ety HF5
Bit More: Ety ER4 (from FR and impressions)
Risk: Tzar 350 (from its description hense risky)
CIEM/Expensibe: Leae LCM-5
I think the 4.Ai may be to bassy/warm not that it is very bassy or warm