Its a small investment for what could be some earbuds you use on the regular EVERYDAY. I can?t say that it is the most comfortable earphone, but then again, I cant imagine what device that goes in the ear can truly be comfortable after an hour. Have to say, I?m so impressed and finally found some incredibly balanced IEMs that are comfortable with a nice soundstage, tight bass, fantastic bright highs, and full mids where vocals can express their surround sound to envelope you. déçue vu son prix (jaurais du privilégier une autre marque un peu plus chère et surtout plus confortable), mon pied ne reste pas collé dans la chaussure, bizarre je ne suis pas à laise quand je les porte, modèle sans doute trop large, première déception pour cette marque. Haven?t used the USB plugs. Skip the OTBT because you can have 3-4 pairs of these (when you catch the price low) instead. Maybe for people that do not know, a simple "remove nipple before insertion" note with the product would be appropriate. When I try to put the controller on the charger, you can?t help but hit buttons and often turn the system back on. The buds were easy to take out of the case, no fiddling with them. The headphones arrived promptly.