Initially, when you start out reading the manga, it might be a slight turn off to some people because it does have a lot of things going on in one panel, hence, you might be forced to try to absorb all the events that are occurring at once.
However, after some time, you will probably get used to it and realize that it isn't that bad at all. Please don't let this slight glitch turn you off completely from the manga.
I love the Ouran Koukou Host Club story due to the characters and the story.
Haruhi, like many have mentioned, isn't like the typical 'damsel in distress' sort of heroine, which is a completely refreshing take after chugging through so many mangas which made their heroine teary, defenseless, weak and very whiny.
Tamaki, while initially annoying(I did find him sort of annoying initially), grows on you as a character. He's not the average 'I am so cool it hurts' guy you always tend to see in shoujo mangas. He is, how shall I put it , an idiot? a goofball? eccentric? overdramatic? A little bit of all of that.
The twins! Ah, the twins. I love the twins. Later in the novel, we see an arc where the twins go through the phase where they start to become less of 'a set' and more as 'individuals'
This manga, is essentially, a growing up tale. Finding love, discovering love, understanding feelings, relationships, dealing with the world as an adolescent. A humorous glimpse of how these characters deal with the everyday problems that they face as adolescents.
I love this story so much.
I do hope people would read it and grow to love it.
And don't judge a manga by its anime, and vice versa.