I really enjoyed Zetman. I binged it from chapter 1 to current after watching the anime. The anime follows the manga very closely expect for the last arc where it makes some changes to make it end a bit better for an anime season. Manga wise the translations appear to only just be wrapping up that same arc.

As far as story goes, I feel its rather unique in the way it handles it really. I haven't read many manga with a similar feel to them. The story revolves a lot around how the main characters develop and perceive situations as the story itself is a little confusing till you really dive into the later chapters and find out more. If you like seeing how different people handle different situations and develop over time with what happens to them then you will really enjoy this manga. It still has a lot of battle and in depth story setup and its very interesting and fun to read but I feel the real grit of the story is character perception and how that changes.

I would say read the manga first then watch the anime. The manga is more in depth in some areas and tends to lay its story a bit sensibly. If you can though watch the anime once you read the current translations. I feel the anime flows better but has a problem of handling some scenes and plot points slightly differently towards the later half. Nothing drastically different but I remember when I was watching the series I felt a little weirded out and lost however later reading the manga it made a lot more sense in the way they presented it.