I don't hear well (an understatement), I use a Fiio E12 (upgraded from E11) to drive my iPod with a line out dock. I use almost all of the E12's power. To the point the IEM's get warm in my ears. I have only found 2 IEM's that are able to stand up to the usage I put them through. I have tried S4's, X5's, X7's, Audio technica, Marley's, Sennheisers, Jlabs, etc. The only 2 that are holding up are the Jlab epics and the Meelectronics M-Duo. These are both leaving a little to be desired. Each is good in its own way.
Does anyone have any suggestions? I don't have a huge budget. But, has been my experience the higher price you pay, the less power they can handle as it is about clarity etc.