Draven or Kalista Patch 5.22

Hey all, I'm looking for advice. I placed into s4 at the start of my season and then due to unfortunate events I dropped to bronze 5, and then in the process of trying to work my way out I ran out of season. (Yeah, go ahead and laugh, I'm pretty bad.) Anyways, I'm wondering who, in this new meta, is better. Draven, or Kalista? Please give me factually based answers and opinions. Please don't just say draaaaaaaven or corki or some troll answer like that. I'm looking for serious help. Thanks for your time and help! BridgeKeep