Well, along with "Ringu Kanzenban", I really feel like this is one of the worth adaptations for someone to approach the "Ring" story. The art itself is pretty decent, it works for a horror/investigation manga, at least on my opinion. The bits of the story mixes the book with some ideas of the Hideo Nakata's first movie. I think is for the best, in the end the story is consistent with the book, some uniteresting bits are replaced with the movie's content, specially Ryuji's character, his personality being from the books, but his story being based on the movie, and in the end I think theoverall product is really enjoyable.
Still, I think the art lack details when it comes to more crucial moments.
I recommend this over the book and the Hideo Nakata's movie,
both from the controversys of the book, such as Ryuji whole deal
and from the "Ringu", for being a really bad movie and overall a bad adaptation.