For me it's the anime, then the manga. Why? because when I watch the anime, it's great and easy to download, and just watch the entire series up to the last episode, hanging for more. Then I can head over to a manga reading website and read from the chapter the anime ended at, and if the anime is loosely based off the manga, Ill just read the entire manga. The only manga I have read that doesn't have an anime series (But I wish it did) was Black Bird.