Best: Sun Fac! Maybe a lesser character, but a great, deatiled, articulated figure.
Worst: Hmm, if I exclude repacked figures, I'd say that Bib Fortuna could have benegitted buy some extra arm articulation. I don't mind salt-shaker figures, but give me some upper body movement.
Also, as far as worst goes, I'd get rid of the Holo pack-ins and the stands and offer more play accesories.