i like chewbacca and am going to farm him to 6 at least. My arena team is a survival team though with lumi, JC, chewy, 5s and Sid of course. It's not the best but it's been good enough to push into the top 50 arena and complete GW everyday without spending a cent. one caveat chewbacca is a pain in the rear to gear up. I still am sitting on gear level 6 because of one of the purple gear mats that is painfully slow to farm