The first series is better than the second series, but they're both highly enjoyable. It's a much more action packed version of the Gently universe, but it's well plotted. The second series just gets a bit too convoluted for it's own good.
Even if unfaithful to the source material, the first season felt distinctly Douglas Adams-y, which is the best compliment I can give. Shame the second season devolved into a Marvel cliche. Further shame that a dark cloud now hangs over Max Landis' name, marring any future enjoyment of the series.
It's amazing, and Samuel Barnett is magical. Too bad it's kinda deflated after a couple of episodes, although it's still a mess of fun (and got a maniac Alan Tudyk!). I just wish the networks had more wacky balls to truly embrace the Douglas Adams' Chaotic Universe.
Max Landis’s writing has an odd, cliche quality to it as if he draws primarily from other films and media to write instead of using actual lived experiences. But, for Dirk Gently, this quality adds to the chaoticness that makes the series work.