The big problem with current lead free solders is the ‘tin whiskers’ problem. Has caused a ton of issues in the electronics industry, even with some very expensive and previously well built equipment. There are other generally less serious drawbacks as well. Of course remember to be careful with leaded, use as little as possible, wash hands and such.

BTW, does anyone know of a good way to dispose of leaded items?

Regardless, strongly agree on using a little paste flux , makes it work sooo much better and easier.