I'm finally getting around to listening to these. I plan to break-in and continue to listen with the default grey/grey/gold filters. I did try the stock clear tips and they seemed okay. But being a "Comply guy" I opted to try out the Crystal tips for the beginning. The tips fit very well and are comfortable. I also swapped out the stock blue cable after the first 30 minutes for the Crystal Silver cable. The Crystal cable is a tad more supple and definitely next to no cord microphonics compared to stock. The monitors themselves fit inside my ears snugly and it appears they will suit me well lying in bed, head on pillow with the IEMs still in my ear. They don't protrude at all. I could do without the memory wire but it's workable and not as annoying as some other brands. Again, the Crystal cable memory wire has a softer flex compared to the stock blue cable.
One thing I did not like at first is the way the 3.5mm plug connector fits into the DAP jack. I'm used to the Westone connector's plastic plug housing sitting flush with the player's jack/case surface. The FLC cable the metal plug is wider near the L-shape plastic housing so a bit of the copper plug remains exposed. At first I kept trying to push it all in but of course it's not going to happen.
Westone:
FLC8S (stock or Crystal Silver):
Even straight out of the box the FLC8S sound good. Using the XDP-100R I switched back and forth between my tried & true Westone W4 and immediately noticeable is the bass with the default filters. I like almost all genres of music except for opera & country but for this trial and breaking in period I am going to audition with ambient/trance, namely Sunlounger, which gives a good range of musicality and tempo along with subtle background nuances...perfect for intimate IEM listening.
After a day looking at these things and an hour or two so far of actual listening I can already say it was an excellent purchase decision.
Next update will likely come when I receive the Null Audio Arête cable and/or Spiral Dot tips.