This is super, super close between Baby Driver and The Big Sick for me. I went with Edgar Wright, ultimately, but picking against "Kumail Nanjiani and Emily Gordon's love story directed by Michael Showalter" was physically painful. Logan Lucky is up there too.
Baby Driver since I have enjoyed everything else I have seen from him so no reason that film shouldn't be good also.
This one's tough, so many promising ones and we haven't even gotten trailers yet for Big Sick or Logan Lucky, went with The Beguiled