Quick comparison: Oculus Earbud, EX1000, GR07.
They are all high definition, detail revealing IEMs. No winners or losers, they are just different.
EX1000 is the most magical for sure, transparent, spacious, especially bass. GR07 and OC can't compete. however I feel it's dynamics is not correct, it takes energy away, it is pleasant but not energetic. another thing is recessed mids.
GR07 is reference level, sound is correct everywhere, more...