Pros: Price, included self impression kit, sound on par with some of the best single driver armature based IEMs on the market
Cons: Main problem is the lack of customer service by Kozee. Multiple people have had issues and delays.
http://www.head-fi.org/forum/thread/562428/review-kozee-infinity-x1-custom-molded-iem See above for my in depth review. This really is a good product. The issue is with the company itself. As I mention in the review, they are not returning emails from customers. And when people do manage to track them down on the phone - they make promises that are apparently not kept. I like Kozee as a company - the product seems good and the prices are low. They just need to get their act together with regards to customer service. If and when they do, I'll be the first person to recommend them.