I need some help!

I currently have 3 untouched precons. “Virtue and Valor” “Scrappy Survivors” and “Peace Offering”. I am a player just getting back into the game since Return To Ravnica and would love some advice. I am going to invest money into one of these decks and leave the other two untouched. Which one would you upgrade and why? I like them all exactly the same and truly can’t pick! I truly appreciate the input! Thanks in advance!