Personally I think the best accessories come from the Handset
manufacturer themselves.
The ones you might find at your service provider's retail stores are
often chinese knockoffs

Jerry is pointing you in the right direction, right towards the
manufacturer's site..
Albeit they may appear a bit more expensive, if ya want it to last, at
least ya know if they are willing to put their name on the accessory,
it's been run through the ringer so to speak.