Best character to zeta first

Yeah, I went for Zader first for arena and for raids. It's a lot of bang for the buck. I'm currently running Zader, Sid, Boba, TFP, and Shore in arena, and I'm thinking about giving the second one to Sid. He's good under Zader lead without the zeta at G11 with everything omega'd. I have him modded to 237 speed, and my turn order is TFP, Sid, Boba, Zader. Boba and/or Zader are usually setup for a OHKO on the first turn with the expose. My third will probably go to Maul based on what's currently available, but I need to take a closer look at Savage. Maul is only G8 right now, and Savage is only 6*. The Sith have become a powerful and flexible set of characters with the last update. There's my $0.02.