I've found the 442 to be the most solid, mainly because Kante covers the entire midfield. It allows a lot of room for strikers but doesn't always matter because I often have 3 people trying to chase my 1 player and that make it tough to score at times. Still though, it's the most success I've had with a formation so far. The problem with these formations is though is that wingers are just not dominant this year! I tried a 4321 and my defense got smoked, with nearly the same players. Same happened with 41212 which surprised me. But maybe I didn't give it enough time. I like the game but I wish the engine made some formations more effective. I haven't used instructions or tactics too much either just because I don't really know how they change your players movement yet. Anyone else think this way?