>>273900662
Headphones breaking was a first month type of deal, they partnered with HTC for their first headset so they had some troubles on their own.
Knuckles have a lot of issues centering around the thumbsticks. For the most part you can use them as a left and right analog but clicking them breaks real quick. Some people have trouble moving them, but again they seem to be getting more uncommon.
Did they fix the issues? Maybe. Is Index worth it? I'd say yes.