I think I'm still a little in the honeymoon period but is also because I really like them, the things I like about is the clarity of the sound, you can hear everything in songs and the imaging for games like halo is really good, also they are the most comfortable iems I own and I own Aria, S12, zs10 pro x, blon 01, and the Chus. What I don't like is that the cable feels frail, they get a little quiet I think they would benefit from an amp but I don't own any, and I think that's it and I'm nit picking