I'll offer a counterpoint: while leaded solder is easier to work with, lead-free isn't too bad if you're willing to work a little harder and deal with a lower y

I'll offer a counterpoint: while leaded solder is easier to work with, lead-free isn't too bad if you're willing to work a little harder and deal with a lower yield (at least up front while you get the hang of it). That said from an exposure hazard standpoint I'm far more cautious about flux than lead. Just using lead-free solder doesn't mean your whole process is safe.