I don't hate Reigns, he just doesn't entertain me at all. I see people say he has improved, but I haven't noticed. From what I saw on SD! (calling the tron a TV, getting overhyped about Bray "bringing the hammer" and saying "Monday Night Raw") he is still that uncomfortable less charismatic cousin of the Rock who inexplicably pretended his hand was a gun at the end of their post-Rumble interview.
I likely wouldn't watch, but if I did, I'd go Cena just cuz I like doing the high-pitched tongue roll at the beginning of his song.