The 2020 TOTL Shootout
Prelude and disclaimers: this list is covering the more noteworthy IEMs I heard and owned during 2020, some of which I own to this day, and others that I owned briefly throughout the months.
Format: 1 line to cover what I feel an IEM is like, 1 line to cover its biggest pro, 1 line to cover its biggest con. I aim to be "objective" with this list in the sense that I'll be listing cons that don't really bother me or I flat out enjoy. The IEMs are ordered by preference really, but it's more like "I'd take my top three over anything else"
With that out of the way, let's begin!
1. MMR Thummim - bare-knuckle boxing
Description: A W-shaped IEM, with heavy hitting bass, extremely textured mids and very well extended treble, with staging that extends to infinity and beyond
Biggest pro: the staging. No IEM that I've tried approaches the Thummim in how wide and expansive the soundstage is
Biggest con: super over-the-top presentation. While I absolutely love that, a lot of audiophiles wouldn't be happy about something with this much coloration
2. Noble Sultan - Bottom of the deep blue sea
Description: A milder, musical W, with incredible bass, sparkly treble, very airy mids and large staging paired with some of the best layering I've ever experienced
Biggest pro: While the stage stretches fairly wide, the depth is from a different dimension. Nothing I've tried is able to do this as well as the Sultan does
Biggest con: Midrange is somewhat thin, bearing some resemblance to the Noble Encore
3. 64Audio A18S - ultimate reference
Description: A warm reference sound, with large staging, incredible treble extension and detail retrieval through dynamics
Biggest pro: Extreme balance between fun and reference, allowing you to listen to anything and everything on it without any issues
Biggest con: Very little coloration - sure the bass is warmer than neutral, but it is also very fast and tight, maintaining the overall "reference" feel of the A18S
4. 64Audio A12t - a watch for every occasion
Description: A warmer and darker version of the A18S, with incredible dynamics and wide staging
Biggest pro: Insanely versatile, literally nothing sounds bad on the A12t. I could comfortably retire with it and only it
Biggest con: The darker, warmer tonality is very pleasing but not quite as engaging as something with a little more treble energy
5. 64Audio Fourte Noir - weird, but a little less so
Description: a more linear and regular Fourte, with an over the top upper treble focus and some weirdness in the upper midrange
Biggest pro: Enormous staging and incredible imaging, courtesy of 64's tubeless tech
Biggest con: The upper-upper midrange can be quite harsh depending on the track - shows up somewhat rarely but when it does it is quite unpleasant
6. Campfire Andromeda 2020 - CFA finally nails the Andro
Description: the most linear and balanced Andromeda to date, with very fast, tight and precise bass, decently textured mids and well extended treble
Biggest pro: best midrange any CFA IEM have managed to pull off to date.
Biggest con: the texture and presentation just screams "BAs" and remains a little too ordinary
7. MMR Gae Bolg - EDC material
Description: A very linear, mid-centric IEM with great texture, and a relaxing, easy-to-listen to warmth in the midrange
Biggest pro: Potential to be used as an EDC - it is just the right blend of engaging and warm with incredible vocals and tight bass
Biggest con: Not quite as technical as some of the other options around its price point
8. VE Elysium - oh how the mighty have fallen
Description: a very vocal/mid-centric IEM, with extremely tight and precise bass and very well extended treble
Biggest pro: the texture and warmth in the midrange, absolutely incredible
Biggest con: the staging is tiny compared to more recent flagships, which combined with the rather large vocals ends up feeling somewhat claustrophobic
9. Jomo Trinity - Rockstarrrrr
Description: a V shaped IEM by Jomo, with amazing bass decay, textured mids and sparkly treble, held back by narrow staging and mediocre treble extension
Biggest pro: how good rock sounds on it. There are very few IEMs that even approach the Trinity where alt-rock and hard rock are concerned
Biggest con: The treble extension - it really does not do it for me personally, it rolls off too much too soon
10. Campfire Vega 2020 - who needs mids lul
Description: a rather rough, heavily V shaped IEM with very slow, fun and satisfying bass and a largely elevated treble quantity to maintain clarity
Biggest pro: Hella fun. Nothing more nothing less to be said here
Biggest con: It doesn't really sport much of a midrange

it's perfect for what it is though, no real cons at its price point if you're into Vs imo
11. Campfire Ara
Description: a very reference-oriented, rather thin and somewhat bright IEM with reasonable technical ability and great detail retrieval
Biggest pro: detail retrieval without a significant treble/upper midrange boost
Biggest con: Andromeda 2020 exists and is literally the more engaging/better version of the Ara
12. Rhapsodio Infinity Mk2
Description: a forward and intense signature with spectacular texture with very large and expansive staging
Biggest pro: easily the lower mids - some of the very best I've heard. Very few IEMs are able to pull off this much texture and weight
Biggest con: easily the upper mids - way overdone and they end up making the signature as a whole too intense and fatiguing
13. Campfire Andromeda MW10 - I remain unconvinced
Description: a thick and very well textured Andromeda with excellent, engaging tuning but not much technical ability to really speak of
Biggest pro: The tuning is very engaging, allowing you to "get lost in the music" without really noticing the transducer as much as you would normally
Biggest con: Absolutely awful, congested, narrow and suffocating stage - it might just be the most narrow IEM I've ever tried
14. Empire Ears Odin - so close yet so far
Description: a relatively neutral and referency IEM with what might just be the most overloaded upper midrange I've experienced to date
Biggest pro: the bass - no IEM manages to pull off a neutral bass with this much warmth and texture to it, simply incredible
Biggest con: how insanely forward and intolerable the upper mids are. Would easily make my top 3 if it maintained that neutrality but stayed more linear
15. Noble Zephyr
Description: a warm/neutral IEM with an upper midrange tilt balanced with good texture and a more forgiving, relaxed nature
Biggest pro: female vocals sound really good on it, but are also quite oversized and bloated because of the upper midrange hump
Biggest con: unless you are specifically looking for vocals, it remains a little underwhelming/boring overall - lacks some character