What is the strongest line for Black?

Casual Game, https://itsyourturn.com
Analysis of Madrigal vs. John Coffey

1 2 3 4 5 6 7 8 h g f e d c b a +1

(black to move) 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Be7 7. Nc3 O-O 8. O-O c6 9. e4 d5 10. Ne5 dxc4 11. Nxc4 Qxd4 12. Ne3 Rd8 13. Bc1 Qxd1 14. Nexd1 Na6 15. a3 Nc5 16. Bg5 h6 17. Bf4 Ba6 18. e5 Nd5 19. Re1 Nd3 20. Nxd5 cxd5 21. Re3 g5

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Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight