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There's no arguing that lead-tin solder outperforms tin-antimony and other lead-free solders. But I use the lead free stuff despite the 20°C higher melting point. Firstly, because it's readily avaiable. Secondly, because lead is harmful to humans and I don't want to be exposed to it while working on a circuit board. Thirdly, if you use lead, your project is destined to become hazardous waste, which is difficult to dispose of.
Leaded solders are illegal in the more civilized jurisdictions, including California and the EU.
Soldering is coming to be an important skill for all EcoModders, EV operators and otherwise. I'll be learning a bit more by trial and error, and hopefully from the tips here, as I'm assembling a PCB for my Honda.
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