Personally, Crawford vs Spence. But for boxing as a whole, Joshua vs Wilder would be much, much bigger.
A billionaire from North America a few centuries back decided to keep shipping loads of Lions over from Africa to fight brown bears in the US and the result was the same everytime, the bear simply smashed the lions face in with one swat because Lions have fragile facial bones, lions have a weak chin, lol!
I want to see AJ v Wilder the most because of the amazing hype and the competive American fan base v the UK fanbase, but Spence v Crawford would display more quality.
The other one I want to see if Gvozdyk v Beterbiev. That would be fireworks and I think Beterbiev stops Gvozdyk.
Brook v Khan Canelo v Golovkin III Canelo v Charlo Golovkin v Charlo Joshua v Fury Joshua v Wilder Kovalev v Beterbiev Kovalev v Bivol Kovalev v Gvozdyk Pacquiao v Spence Pacquiao v Thurman Porter v Spence Spence v Crawford Thurman v Spence
W.Klitschko vs Wilder ( if he gets by Breazeale ) I'm picking this one because I know Wilder would lose and he won't fight Joshua while holding the WBC belt , so it will put an end to all the Wilder nonsense and he can go after Joshua then if he wants it back , i still like to see Joshua punch Wilder in the face ....just cause he's that annoying !