Which media follows the original novels more? The 아니메 또는 manga?

I have been some what of a 두라라라!! 팬 for awhile. I have read all of the 망가 published so far and have watched some of the anime. I read the 망가 first, but that was before I knew that the 아니메 was created before the manga. I usually read/watch what came out first.

Both the 아니메 and 망가 have big differences (even between the bvery first episode and the entire first volume). So, I was wondering if one was 더 많이 like Ryohgo Narita's original novels, and if so, which one.

If i could have an answer from a 팬 who has read the novels and 망가 as well as watched the anime, it would be greatly appretiated :D

(Random picture of my 가장 좋아하는 망가 팬 ever!)