Agree with TKO that its the same group and matchup dependent, but I will go:
Hill - usage this year is great and Hunt is taking some attention away from him
Hilton - best overall but QB situation is the most shaky
Crabtree - mostly TD dependent IMO
Rest of the season:
Hill... Probably the safest option.
Hilton... finding a groove with Brissett. Luck on the horizon?
Crabtree... Always been a roller coaster with him IIRC.