Depends, you need some of the Kage Rares which help for Ninja Exam (Specifically Kazekage Gaara and Sage Naruto is also a really good help in that department as you can do most ninja exams especially the early to late 100s and maybe even beyond that). But if you want more pvp, I'd recommend GNW Treasure and pick up Kushimaru, Edo Sasori, and Jinpachi