The Dutch are my favorites. They've got a big chunk of the team that's bossing their qualifying group down their with de Vrij, van Rhijn and Blind along the backline, that Strootman, van Ginkel and Maher midfield trio and a capable attacking line.
But Russia will be really strong as well, they've got Dzagoev, Kokorin, Cheryshev and Shatov joining from the senior side to play with Shennikov, Burlak, Yakovlev, Panyukov and Smolov. That's a big chunk of what should become the core of the team who will represent them when the WC comes to Russia in 2018. Ozdoev is the only eligible player who's not there who'd have liked to see on the team and that first trio of attackers will tear many of these defenses to shreds as all 3 of Dzagoev, Kokorin and Cheryshev can really shoot the ball on top of their strong dribbling and movement.
Italy also brought a lot of attacking firepower to run around in front of Veratti.