I am looking for a DAP in the $300-500 range (USA). I have 15,000 flac files on my hard drives (NAS). I will be converting my classical albums to flac in the future. I want a good DAP to use my headphones with. I also want to use it with our cars when we go on trips. I am looking for good specs and good battery life. The ones I have looked at are the hint r5 Sabre and the ibasso dx160. I am looking for the good specs and easy software for using my music. I would appreciate any advice.