Ah thank you, that makes sense. Guards! Guards! was the first one I really liked. I hadn't thought before that this was probably because I was familiar with police procedurals (and schoolgirl heroines with a determined sense of honour) but unfamiliar with the tropes of fantasy.*

I haven't read any since around about Carpe Jugulum though and probably should at some point.

*I did try but making sense of how the world I was in worked was hard enough without trying to work out what all the rules were in other people's imaginary worlds in my spare time.