Eli Monpress series, by Rachel Aaron

I enjoyed the first four books mostly because of the worldbuilding. Some character relationships and plot elements were pretty cool, but they weren't my main interest. I really liked the set-up of the world with all the spirits and the hints of what was going on in the background. Fortunately book 5 finally focuses on that, and wow is it dramatic.

( spoilers )

Many characters in the series were kind of odd to read about because I could never settle on how I felt about them. Many of them I liked in one book and then a lot less in the next. ( spoilers )

I read the series in less than a week because I always wanted to know what happened next. I don't think it's one I'll reread (except maybe the last one because I have some vague story ideas), but I enjoyed it.
(Edit: Anyone interested in beta-ing a short post-canon Weaver&Hunter fic?)