i own anderson so some personal bias here, he's the safer bet imo and has already shown what he can do with a competent qb. i wasn't sure how reuniting with darnold would change things and so far he's producing at the same levels he did last season, so i'm comfortable with him as my wr3/4.
i will admit Osborn, like any other young bucks coming up, is the unknown factor and a perceived higher ceiling as a result. he is clearly the third option though behind jefferson and thielen, so you have to wonder whether the vikes are a volume team enough to keep the pace up from the first two weeks for him. i guess if cook is down for any length of time, they would have to throw more.