Best ones: City of Towers, by Keith Baker (The Dreaming Dark trilogy, vol. 1) and The Shattered Land, by Keith Baker (The Dreaming Dark trilogy, vol. 2).
Good ones: The Binding Stone, by Doug Bassingwaithe (The Dragon Below trilogy, vol. 1) and In The Claws of The Tiger, bu James Wyatt (stand-alone)
So-so: The Orb of Xoriat, by Edward Bulme (stand-alone)
Don't bother: Marked for Death, by Matt Forbeck (The Lost Mark trilogy, vol. 1)
These are all I've read so far.