Testing 5 Ender 3 Fan Duct Upgrades

What are the best fan duct upgrades for the Ender 3?

While the stock Ender 3s' part cooling fan is usually enough for most people, some decide to upgrade their part cooling.
I made a compilation of all the water tests I have done so far on my Ender 3 Pro part cooling upgrades. I thought this could be useful to others as it allows to compare the noise and the airflow of various cooling mods side by side.
There is no particular order: Note that better airflow does not necessarily implies better print quality. Too much airflow will deflect the filament as it leaves the nozzle and degrade the print quality! Too much airflow can also reduce inter-layer adhesion.
For most parts, a cooling mod may not be necessary. A cooling mod improves bridges and overhangs, reducing the need for support structures.

⏰ Chapters ⏰
0:00 Ender 3 Pro Stock (4010 fan)
0:10 Bullseye (4010 fan)
0:21 Blokhead (5015 fan)
0:31 Blokhead (5015 fan @75%)
0:41 Hero Me Gen 5 (single 5015 fan & dual ducts)
0:51 Hero Me Gen 5 (dual 5015 fans & dual ducts)
1:02 Hero Me Gen 5 (dual 5015 fans @ 50% & dual ducts)

➡️ Downloads
* Bullseye
https://www.thingiverse.com/thing:275...
* Blokhead
https://www.thingiverse.com/thing:275...
* Hero Me Gen5
https://www.thingiverse.com/thing:521...