Shaco or Rengar

I'm saving up for a champ, because I'm getting a bit tired of only playing Ekko and Yasuo. I started to play Ekko jungle, but the early game is too damn hard. So I've been looking at jungle champs and I've set my eyes on Rengar and Shaco. My question is which champ is better? (Doesn't fall of really hard, has a decent early game, can carry...)