There is no best type of meditation. A form of meditation may resonate better with you than another one.
Individual choice is important. Starting off with focused awareness theoretically may be the best way to start as it is an initial way to create stability of the mind. The breath is always available to focus on. In open monitoring the multiple changing objects may be difficult initially to bring awareness and concentration to. For some individuals it may be better to start with focused awareness and create some stability of the mind. Then shift to open monitoring.
– Phil Blustein