Eklund and Frondell were both elite scorers in Allsvenskan at 17, which like being a top KHL goalie under 20 (Zavragin), generally translates to top NHL success.
Martin is getting hyped, but I don't see it, physical center but he's not huge and not a great scorer.
Desnoyers is tricky, two way center, but Q is weakest CHL league, looked good in POs, not so good in Memorial Cup.
Martone is safe pick, less upside but fewer questions about transition (held his own with NHL players in a couple WC games).
O'Brien another tricky pick, going to be big, but how will he play when he fills out. Real nice numbers at 17.
Flyer prospect to watch next season, Spencer Gill. RHD who was 6'4 186 when drafted a year ago, now supposedly up to 215 lbs. High ankle injury cost him the rest of the season and a deep PO run. August B-day, so will play his D+2 season at 19. Should make Canada W-20 team. A pick based on upside as a late B-day with a big frame and good skill package.