Waking up an old thread (!) here. I was looking for the latest on chi-fi IEMs.
I can tell you 1 thing for sure : I REALLY DONT LIKE ANY SHURE IEM. Tried the Se215, 325, 425, 535. They sound dull, mids are way too forward, make my guitar sounds like a toy. I got rid of them all after a month each. My opinion is 100% aligned on Crinacle POV. https://crinacle.com/rankings/iems/
I've been using KZ ZAX Pro for a while now (+2y?) and I like them, but if I could just increase the mids (or decrease lows/highs!), it'd be perfect. Looking at the newest AS16 Pro X. Just got Truthear Zero Red, different sound signature that I dont really enjoy, mids are really forward and lacking bass (even with adapter), but still my guitar sounds way more natural in these than any of the Shure,s offerings.