Is there a runterra champion that's a must have 6* right now?

I just got a shard by accident because 2 back to back runterra silver boxes gave me 20 shards each. So I went from 60 pieces to a full shard. Is there anyone that's a fantastic choice?

Neeko seems ok if I can get the subtypes out, but I don't really like playing Neeko. Still seems strong though.

Aatrox.. I don't really play him. I've got him 4 starred, but that's mostly because of the luck of the draw when it comes to shards. If I need an equipment champion I prefer ornn. Either him or vayne. I use him in monthlies when the condition "when you draw a card set it's cost to 3" shows up so I can get 3 cost darkin. I mean, with his 6 star power I still have to SUMMON the darkin before I get the boost.

Evelynn seems neat, but I've got her 5 star, she already seems pretty powerful.

Fiddle seems.. if anything he might be the best I think. If I can terrify 10 times in one turn that's -10/10 to my opponents and +2/2 spread out 10 times to my units. Especially if I do that one tactic someone suggested of loading up on 1 costs to shoot the Nexus on attack.