This a very personal decision with many variables. Ultimately it can only be answered by you. There is a book titled "Living The Martial Way" by Maj. Forrest Morgan USAF. It explores how to choose a teacher and a style based on your personal objectives. It also discusses how to avoid unpleasantries such as getting taken by a glib fraud. It is a very good investment to make before choosing either a style or a teacher.
I personally study at the Bujinkan Atlanta Dojo. There are Bujinkan Dojos across the US but the quality of the instructors vary. I prefer to study with instructors who train on a regular basis in the country of the art's origin. My sensei spends two to four weeks a year in Japan with his sensei and has for over twenty years now.
This is not to say that there are not very good instructors whose training has been totally domestic.