After reading the first 5 volumes of "Bakemonogatari" I've come to the conclusion that the manga adaptation of NISIOISIN's most popular work is truly magnificent!
Story:
The greatest aspect of Monogatari is that it can be enjoyed on a superficial level through comedy and interesting character interactions, yet at the same time the series is filled with symbolism and themes that inspire and are thought-provoking. Moreover, even though we might feel clueless and lost at certain points, near the end of each arc we get a "punchline" that connects all the strings from before and provides a satisfying conclusion. For some, the ammount of dialogue might be overwhelming at times. However, after you get attached to the characters you'll be longing for every single interaction.
Characters:
Monogatari's characters recieive common praise for being some of the best written and fun to watch. They all go through their own character development and are a great represantation of the themes presented in their own arcs. At first you might get the impression that characters are just walking anime tropes and cliches, but don't be mistaken. It was made on puropse in order to surprise the viewer and show a more realistic side to these tropes.
Art:
Oh Great's art is among one of the best you can find. It has that cinematic feeling to it. What is more, every single panel is extremely detailed and some are filled with easter eggs. So far the best art can be seen in volumes 4 and 5 as we are greated with some stellar fight sequences. The character designs are also great and depict their personality in a great way.
Enjoyment and overall thoughts:
As you may guess I found "Bakemonogatari" to be one of the best ongoing series I've read. I'm giving it a 9 so far as it still looks like it has more place to grow. Now, for all the anime-only fans - give it a try! From my point of view, the manga adaptation expands what was presented in the anime and adds new layers to it making characters even more fleshed-out. I'd gladly recommend it to any Monogatari fan or somebody who's into rom-com, mystery type of stuff.