Best choice for 5* Champ upgrade to R4

faizi_frenzy

Please help me guys, which 5* champ should i upgrade to R4 from below list, and please also tell me which one are the worst i had acquired. Also note that, all of the champs are not duplicated ones
1. Silver Centurion
2. Nova
3. Ronin
4. Hyperion
5. Ghost Rider
6. Black Panther
7. Omega Red
8. Korg
9. Ronan
10. Howard the Duck
11. Loki
12. Super. Iron Man
13. Spider-Man (Normal one)
14. Docter Octopus
15. Iron Man (Normal one)
16. Dormammu

Unknown

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