bflat
Headphoneus Supremus
You have a little more control over the LDAC performance by going into Developer Options in the Android Settings. The default is adaptive (it will dynamically change from, iirc, 330 to 990, depending on connection quality) which to me honestly works fine, but when I really want to ensure the highest bitrate I go to the Developer options.
Thanks. It looks Fiio moved that to their custom Audio options and I have that set for "LDAC Quality".
After trying a couple silicon ear tips (JVC, FA, Symbio), I like the fit and sound of JVC Spiral Dots. These should work out fine for everyday wear and save the OEM tips for the plane (which won't be any time soon). Spiral Dots do seem to add some sparkle and removes some upper bass for an overall more neutral tuning. Symbio was interesting - similar upper sparkle, but kept the upper bass of the OEM tips. I just couldn't get a comfortable grip with those. Need a size between small and medium. The only size FA I had were too small so didn't get a good seal.