Honestly, it's a tough pick between Emre's and Carroll's.
Carroll's flew at the speed of sound, and never dropped altitude. It was beautiful to behold. Perfect technique and connection.
But Can's was a harder skill. The ball is coming from behind as Emre is running away from it. He also had to generate enough pace to beat the keeper.
The cross for Carroll's provide more pace for the shot, the ball travelling in a less severe arc, and whipped sideways to a waiting Carroll.
All in all, Carroll's was more aesthetically pleasing (just), while Can's is a more commendable strike because he had to do a more in comparison.