First of all, I just got these so I can't speak to the longevity.  I've been using a $12 set of buds for almost a year and have put up with the hassle of the wires just because they sound so flippin good.  With a frequency response of 10 to 20,000Hz, I got all the bass I wanted as well as mid to high range.  That said, I was leery about BT ear buds but I've always been a fan of Moto products even though I have a Samsung Avant phone so I decided to give them a try.