I have all my music ripped to FLAC on my NAS. I have a subset of those files converted to ALAC in iTunes on my Macbook Pro which is sync'd to my iPhone X. I listen on a pair of Noble Encore CIEMs straight from my macbook or my iphone. I like being portable for even moving around the house easier rather than lugging my macbook around. I also just purchased an Audeze LCD-X + AudioGD NFB-11.28 which while I plan to listen from my macbook pro to the NFB11 for FLAC/DSD playback, using a portable device would be more ideal but not totally essential as since the NFB will be stationary my macbook pro can usually be plugged into it. I'm running out of space on my phone and would like to store more of my FLAC music library on it. As I don't want to upgrade my phone, I was considering ripping 320kbps mp3s from more of my FLACs and then storing that additional music on my iPhone instead of using ALAC. So my main question is: am I better off keeping my mobile music lossless rather than 320 mp3s and thus having to invest in a portable music player which I would use as main source to my NFB at home and portable; or am I ok to rip to 320kbps mp3s on my iPhone X and then use that as the device for mobile use as well as main player too for my LCD-X+NFB11 combo rather than using the FLAC player on my macbook? I'd like to avoid the cost of buying a dedicated mobile music player, but will do so if there would be a drop in audio fidelity with the 320 mp3s on my iPhone X rather than a dedicated music player. If I am to buy a music player, my max budget would be $800 or so.