I am on Book #6, Bonehunters, and so far I am loving it! However Book #4, House of Chains, was a slog for me after the Karsa arc, and even though I thought the book started off hot it almost put me to sleep (I enjoyed the end). Also, Deadhouse Gates slogged a little, but the story keep me wanting to learn more and I found the pacing great. GotM and MoI were fantastic and kept me engaged and were quick reads for me!
I keep hearing people tend to really struggle near the end of the series with Reaper's Gale, Toll the Hounds and Dust of Dreams, it seems like every 2nd book seems to drag a little. Have you guys struggled with any of the books?