I went Horvat in the poll, but with Wennberg available I vote for the swede. I think he has the best combination of offensive ability, size, and work ethic out of the forward pool available @ 14.
Mantha has all word tools but apparently compete issues, which can be a recipe for disaster. Therefore,I give the edge to Wennberg because 1. No commitment/work ethic problems 2. Their games fit the team vision 3. His offensive ceiling (which he is more likely to reach) isn't much lower than Mantha's 4. Mantha could likely be there to take with the NYR pick while Wennberg/Horvat almost certainly won't be.
I do acknowledge though much of this decision however hinges upon your view of the difference between Wennberg/Horvat/Lazar because its likely that at least one of those players will be available (in this instance at least) to take with the NYR pick. Therefore if you view those players as being relatively interchangeable than the smart move is to go with Mantha and pick the one that remains out of that trio.