I have read many mangas from Berserk to Death Note to Akira to Real to Slam Dunk and so many more, overall Berserk is the best I have ever read. It's a masterpiece. I won't spoïl anything just you must know something : the first three volumes are the less good so do NOT stop there, the manga became great at the second half of the volume 3 when Golden Age arc begins. I'm at the volume 37 right now and it's impossible to me to stop.

The drawing, the story, the characters, just epic. Do not try to watch the different anime, it's good but not as great as the manga really is.