As far as top prospects who have military commitments, see Joel Armia. Its certainly something to consider.
I have seen Barkov on TV (like most of us) and seen Drouin live many times (I live just outside of Hfx) and Drouin has sick hands. Dont be afraid to draft him.
In the end, both players are young so we probably arent even seeing the best they have to offer as both will grow. I dont think you will go wrong with either.
10 Team, Points Only, $$ League, Keep 20/25 at seasons end
25 Man Roster, top 20 monthly point getters count
Goalie points W=2pt L=-1pt SHO=2pt
Stamkos, Tavares, Hall, Couture, Hanzal, Wheeler, Stastny, Versteeg, Fisher, Hornqvist, Eriksson, Hodgson, Setoguchi, Turris, Steen, Letang, DRoy, Yakupov, Grabner, Byfuglien, Baertschi
G-Rask, Halak, Schneider