Best swashbuckler ever? I'm not totally certain, after all the Adventures of Robin Hood, Mark of Zorro, and Sacramouche come to mind..but Fanfan La Tulipe comes close. Full of fuzzy romance, daring-do(awesome sword fights), and the charismatic performance of Gerard Philipe elevate this to the top of the swashbuckling genre.
And have I mentioned Gina Lollobrigida?! Well let me say that when you first catch sight of her in the low cut gypsy dress..well you fall in love, plain and simple, no debates, no discussions.