I really hope in a honest answer here. As I don't like bright iems, are they subjectively brighter than the etymotic? I see that etymotic have lower highs, yet they are regarded bright by a few people.
Yes, the H3 is quite a bit brighter in the highs (the area between 6 and 8 kHz is definitely elevated).
As I said, my diffuse-field-target-oriented compensation is not quite right yet - imagine at least about 5 dB more level in the area around 6 kHz than what you see on the graph.