R2A are still my favorite IEMs. The soundstage, bass, timbre, naturalness, positioning, realism, smoothness, delicate treble - these thing were growing on me since beginning. This is exactly the type of audio equipment that does not make you say "WOW" on the first try, but is steadily growing over time. The build quality of cable -> shell is not perfect though and needs some mods to support the cable.