I am very picky about sound quality and have been looking for HD headphones under $400 for about 6 months. I've tried high end Boss, Sonny, JBL, Beats, Marshal, Philips and a few others. Only Bowers & Wikings sound slightly better than Fiil in the CANVIIS sound, but cost almost twice as much as Fiil. The mechanical assembly of the Fiil earbuds is nothing special, but everything serves its purpose well enough to ignore small currents. Can't comment on durability as I've only been using it for 3 days. They seem solid, especially compared to the Philips which broke after 5 days. I would recommend these headphones.
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