Except for a few cool moments early on, all the "fight" scenes boiled down to everyone's Techode trying ineffectually to stop a rampaging monster until Katana shows up and shoots it. Made even more ironic when Hajiki is accused of using his Techode as a tool for fighting, even though he usually just uses it to run away.
Plus, the show takes a completely different direction at episode 18, and while your millage may vary, to me it was a downward spiral from there on out.