The 64 Audio A6t seems great, and will probably match your desired sound well, based on your HP collection. Make sure to print out the 64 Audio instructions for the audiologist. You need much more extensive impressions for IEMs than for hearing aids, and the impression need to go past the 2nd bend of the ear canal (deep).title pretty much says it all, i have weird shaped ears and iems have never been good for me comfort wise and its hard to test iems now a days so im looking for some recommendations! Current front runner is ths 64 audio A6t. My head phone collection consists of the LCD-X, Sony Z1R and Fostex TH 900 if that tell you anything about what im looking for. Finally ill my current dap is the a&k sr25 which is what i will run them off of most of the time. Any suggestions would be awesome thanks!