I read through the first ten books this last year. They always caught my eye because of the artwork, but my interest never went past that until my roommate bought the books (she grew up on Warriors) and lent them to me. I enjoyed them for the most part, and I excuse the inconsistencies due to the series being aimed at preteens. Humans squeak and mangoes are how big?
My favorite character has to be either Starflight, Sunny, or Qibli, but I liked all of the characters for the most part. My favorite book would have to be The Lost Heir. I related to some aspects of the story on a personal level, and I also found Anemone's leash situation hilarious since one of my sisters also went through that experience.
I do plan on reading the newer books, but I'm reading through the Age of Fire series for now!