List update:
A couple of changes, plus adding in some commentary and including the iem's I've owned below #10:
1. Sony IER-Z1R - Pro's: Perfect bass & treble (for my preferences), big soundstage, excellent detail retrieval, comfortable and non-fatiguing Cons: Recessed mids (not as bad as people say in my opinion, but still recessed compared to others i've heard), price
2. Campfire Solaris 2020 - Pro's: Huge soundstage, fantastic for live/acoustic music, sparkly treble, great all round performer, comfortable Con's: Sensitive (higher impedance than the SE so it's a little more versatile), bass is a little tame for a DD, price
3. Campfire Solaris SE - Pro's: As above. Cons: Sensitive, bass is a little tame for a DD, price, not as comfortable as the 2020
4. QDC Anole VX - Pro's: Incredible detail retrieval, excellent BA bass, well balanced. Con's: BA timbre, price
5. Sony IER-M9 - Pro's: Balanced signature, excellent imaging, non-fatiguing, comfortable. Con's: Takes time to find the right fit, lacks some bite, BA bass
6. Sony XBA-Z5 - Pro's: Big deep bass, relaxing yet detailed treble, nice mids, super-wide soundstage. Con's: Not really the best at anything, awkward shape and looks funny when wearing, mid bass sounds bloated without enough power.
7. Campfire Andromeda S - Pro's: Open and airy sound, love the build quality and design, treble is sparkly, nice forward mids. Con's: BA bass (a lot worse than the above), too sensitive
8. Sony EX1000 - Pro's: Excellent detail retrieval/soundstage/timbre, mid bass has a nice punch Con's: Awkward fit, treble peak that becomes fatiguing, gets a little congested in busy passages of music.
9. Sony XBA-N3 - Pro's: super comfortable, huge deep bass, relaxing and smooth sound. Con's: Definition is lacking, too much bass at times, average soundstage, treble not as extended as the above IEM's.
10. BLON BL-03 - Pro's: Value for money, excellent natural tonality, comfortable. Con's: Stock tips are useless and makes the fit difficult, average resolution, below average definition, average soundstage, bass can be a little flabby, needs more power than other IEM's to really shine.
11. Sony EX800ST - Pro's: Nicely balanced. Con's: can sound muffled/hazy/veiled with complex passsages of music
12. Tin HiFi T4 - Pro's: Well balanced, comfortable, scales with better sources. Con's: A little too thin sounding
13. Sony XB90EX - Pro's: Epic bass, comfortable. Con's: Too V-shaped, vocals are hazy, lacks definition, bass can be too much for some genres of music, non-removable cable.
14. Sony XBA-4 - Pro's: Excellent for electronic music, great bass for a BA, very comfortable, excellent separation, can compete with higher ranked sets when paired with a low Z-out source. Con's: Low impedance/very picky with sources, recessed mids, unnatural sounding treble, sounds incoherent with most genres of music (works for electronic music), overpriced.
15. Sony MH1C - Pro's: Smooth and relaxing tuning, comfortable, price. Con's: Non-removable J-cable that is annoying and microphonic, narrow soundstage. Treble roll-off, not very detailed.
16. Sony MH755 - Pro's: price, great tonality, great bass extension. Con's: Narrow soundstage (relative to others on list), rolled-off treble, not very detailed treble, stock cable is too short
17. KZ ZSX - Pro's: Good sound separation, price Con's: One-noted bass, BA timbre (the worst I've heard), uncomfortable
Incoming additions: Vision Ears Erlkonig, Empire Ears Legend X, Moondrop Starfield, Moondrop S8, BLON BL-05
A few new additions to the list:
1. Empire Ears Legend X SE - As @gnahra said above, the LX SE has Effect Audio internal wiring and has a slightly different (but significantly better to my ears) tuning. There's a reduction in the mid/upper bass and a lift in the mids to lower treble region which balances out the FR. You still get the awesome bass quality of the standard LX but with better control and less bloat. The signature is less L-shaped and closer to a balanced sound. It ticks all my boxes.
2. Sony IER-Z1R
3. Campfire Solaris 2020/SE
4. 64 Audio U12t - Edges out the Anole VX for me as the best all-BA set I've heard
5. QDC Anole VX
6. Sony IER-M9
7. Empire Ears Legend X - I find the standard LX too L-shaped for my taste. Still a great IEM though.
8. Sony XBA-Z5
9. Campfire Andromeda S
10. Sony EX1000
11. Sony XBA-N3
12. BLON BL-03
13. Sony EX800ST
14. Tin HiFi T4
15. Sony XB90EX
16. Sony XBA-4
17. Sony MH1C
18. Sony MH755
19. KZ ZSX
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