What this series is: A good horror anthology anime What it's not: A replacement for the original manga And that's okay! Especially compared to Studio Deen's previous Junji Itou Collection, Junji Itou: Maniac is a big step in the right direction. While it's pretty obvious that this series still has a low budget, it's clear the creators kept that in mind this time when choosing which stories to adapt, focusing on more conceptual and dialogue-based stories rather than ones with detailed monsters. While the overall direction is much better, one major issue is how saturated the colors are in most episodes. I really recommend lowering colorsetting on your monitor/TV for a better viewing experience.
Junji Itou: Maniac is a good series for viewers looking for an enjoyable horror anthology, but it still pales in comparison to the original works it's based on. If anything though, it's a pretty good entry into Itou's work for people who don't read manga particularly often.