Sonic Defender
Headphoneus Supremus
Regarding the volume level with Cipher, I consistently listen OUTDOORS (where it's even louder) at about 25% or so. I can't imagine what it's like to be at 50% - 75%...and my ears already hurt imagining what levels your colleague listens at to, claiming it was too low.
I suspect you listen fairly quietly. Most people I know who think they listen at close to loud levels actually listen to me rather quietly. Have you ever used a SPL meter to see? I for instance like a rather loud playback volume, easily 85-90db (but for shorter duration) so I can imagine getting well past half way with the Cypher.