
7Hz
7Hz x Crinacle Zero:2
Budget gaming pick, but poor cables and polarizing bass.

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Totally agree. The two main substancial jumps in overall quality I noticed (as a basshead) were 250 and 700 bucks.
Really warm and airy and no harshness at all. I still eq the 4K frequency down a bit, but this is a fuller sounding V shape iem from the low end and high end. It appears the Koto Ito has the rumble, and the Doscinco has the slam. I’ll order the Dunu set and make a comparison. I like the graph on both. I love the Doscinco. The bass and treble have meat to them and pair well together with mids that despite being recessed, have enough presence to not sound hollow or cold. It’s an amazing iem for bassheads, though it appears to Dunu is a stellar choice as well. I love this hobby.
I've owned well over 200 IEMs and I don't recall the exact journey, but if you like bass I would recommend the Ziigaat Doscinco, Thieaudio Hype 4 or the Xenns Tea Pro. If you not sensitive to treble I would recommend either the YU9 Que or Ziigaat Estrella with Shortbus Audio tape mod. The Melody Wing Venus is a great set if you can find them for a decent price. The MP145 can be an endgame set especially with a good DAC/Amp.
The Ziigaat Odyssey is a good safe choice, I personally prefer the Ziigaat Doscinco or Estrella, they are going to have more bass. You may always want to check out the Canpur Silver Flash CX3-02 it has garbage accessories, but great tuning and technicalities.
The Canpur is neutral with a boosted bass, the Odyssey is a little warmer than the Canpur and not as detailed. The Doscinco is the most bass focused of all these sets and the Estrella, my personal favorite out of the four, is in between the Doscinco and the Odyssey, but I did do the Shortbus Audio tape mod on my set. The mod gives the set more mid-bass and helps give the mids more weight.
I also have those Sony's and I'm a big fan. I went for the Ziigaat Doscinco for that warm bassy sound, and I love them. They are just smooth and velvety, and I heard one review calling them cohesive, which I fully agree with. I did try the Tea Pro for about 10 minutes and was impressed with them too, but couldn't do a side by side. However, I think you'd like them too (and they have better accessories/cable). However, the Doscinco can be had for around €210 now.
I already have the Ziigaat Doscinco but this is more for professional uses
my favorite is the QKZ x HBB but its more so because its the first iem i listened to that had the sound signature i was looking for which is warm, smooth treble + thick or meaty sub-bass thump & rumble. Ironically its my most favorite set even with the more expensive sets i own maybe because of sentimental reasons but i still keep it in my collection because the tuning is my personal baseline for what sound im looking for. then i would say the 7Hz Legato would be my 2nd favorite as it has this bassy club like bass i never really cared for EDM or Electronic music until i got these, i understood what reviews meant when they described it as "A Wall of Bass" when i bought them they are basically are a more bassy more detailed & cleaner sounding Kbear Rosefinch which is already a bass cannon set in its own right both are warm but i would say they lean just slightly in the darker tuning. then you got the more expensive heavy hitters, TSMR Armor, Ziigaat Doscinco, Fatfreq Deuce, Punch Audio Portazo & Martillo. the TSMR Armor is what i would describe as a more refined/detailed QKZ x HBB with even more meaty & punchy bass in the UDD switch config. the Punch Audio Portazo to me sounded better than the Martillo as i already owned the Deuce and i couldnt justify the price tag of the martillo for cleaner sound as i bought the Deuce & QKZ Hades strictly for insane amounts of sub-bass for guilty basshead pleasure, the Portazo just has a harder mid-bass punch than the Martillo with brighter but not harsh,sharp or shouty treble to me its the better value, the Ziigaat Doscinco is what i would call warm, lush sound with mature tight bass i liked the sound of them but ultimately returned same reason as the martillo the value to bass performance for me wasnt there but i see why many people love them. lastly the Fatfreq Deuce my guilty pleasure bass cannons set, these are not warm but just like the Portazo they are not really bright either in the sense of being harsh or shouty in the highs if you are chasing sub-bass rumble and something like the Rosefinch or Legato didnt scratch the itch enough or cant justify the price tag of the Fatfreq Scarlet Mini or Grand Maestro then you have the Deuce i compare the amount of bass on them to the QKZ x HBB Hades which has been discontinued but much much cleaner sounding whereas the bass on the Hades sounded muddy, cheap and the vocals were recessed to the point they sounded underwater, the deuce just make me smile when i play hip-hop and EDM they are what some might call one trick pony but as a basshead they do the trick very very well and they finally scratched my itch because of them i now kinda stop going after more expensive bass heavy sets like the Kiwi Ears Punch or Ziigaat Arete 2 and turned more towards sets that are unique, weird or lesser known to keep adding to my bass collection as the deuce are pretty much my endgame set as a basshead lover.

7Hz
7Hz x Crinacle Zero:2
Budget gaming pick, but poor cables and polarizing bass.

AFUL
Explorer
All-day comfort, warm sound, but lacks clarity and detail.

KEFINE
Klean
Budget gaming, but harsh treble and moisture issues.

TANCHJIM
Bunny
Unique app EQ customization, but odd connector port design.

ARTTI
T10
Detailed sound, great value, but fit issues for some.

Ranked #1
Kiwi Ears - Astral

Ranked #1
Simgot - EM6L

Ranked #1
Drop + Etymotic - ER2XR

Ranked #1
KZ - Castor Pro (Harman Target with Improved Bass Version)

Ranked #1
KZ - Castor Pro (Harman Target with Improved Bass Version)

Ranked #1
TRUTHEAR - Hexa