Just don't use crap solder, actually... There are some good lead free solders available on the market now. Nihon Superior SN100C, for example. The biggest prob

Just don't use crap solder, actually... There are some good lead free solders available on the market now. Nihon Superior SN100C, for example. The biggest problem I see with hand soldering is people not using enough flux (get a no-clean flux pen, they're amazing) and then just blaming the solder when they can't get it to flow... Reflow will do similar if you let the flux dry out (keep it in the fridge - I often put it in a zip-lock bag to try and really keep moisture out also).