SDG #086 What's the best flux for soldering? A comparison with PCBs from JLCPCB

$2 for PCB Prototype(Any Color): https://jlcpcb.com/ 1. Yellow Solder Paste: https://bit.ly/2Yhd9rg 2. Mechanic MCN-UV80: https://bit.ly/2XyaqwM 3. Pro'sKit 8S005: https://bit.ly/2J7FDO2 4. Weller F-SW21: https://bit.ly/2Yg0k0B 5. AG Termopasty TK83: https://bit.ly/2ZOnOdr 6. AG Termopasty LP-1: https://bit.ly/2J7H6UD 7. CIF F42202 Gel Flux: https://bit.ly/2Yk47de 8. MG Chemicals No Clean Gel: https://amzn.to/2IQ1j25 9. Best BST-223-UV80: https://bit.ly/2X4gbhe 10. Relife RL-421-OR: https://bit.ly/2XC6sDd 11. Relife RL-422-IM: https://bit.ly/2IRsU33 12. Topnik Zel Flux: https://bit.ly/2X8bUcV 13. KSS S800 Flux: https://bit.ly/2JdHlgT 14. Amtech NC-559-V2-TF: https://bit.ly/2XbakvI 15. Fake Amtech NC-559-ASM: https://bit.ly/2KGhL7u 16. Kester No Clean: https://bit.ly/2KDRA15 Equipment: ...