In a vacuum, Trout is the pick. However, looking at your roster, you have a very good, young outfield, and are much weaker at 3B. Plus Moustakas is much closer to getting to the bigs. Unless you can trade to upgrade 3B, I'd go Moustakas.
10 Team H2H Pts Dynasty
Arencibia,Hosmer,Kinsler,Tulo,Bruce,Stubbs,Rasmus,Morrison,Beckham,McGehee,Lind,Lawrie,Zimm (DL),Belt (DL)Trout (ML)