Well, in practical purposes and for hobbyist, using a lead-free package or not doesn't matter much, its just that the lead-free package will take more heat whitout damage, but using lead-free tin over leaded tin then there's a big diference, it will be more dificult to solder with lead-free because it requires more heat aswell more skill and in the end it wont be so shiny (pretty, if that matters).
I have some more old-school coleagues that really hate to solder with lead-free, it will be ok once you get the hang of it(a lot of practive).