Agreed, re taking some time to get into Sabriel the first time I read it; however, on re-reading it, I found it raced along a lot better, because the world had become more familiar with the subsequent books.
Lirael is just perfect; it is a first rate, rollicking fantasy, and just grabs you by the scruff of the neck. Powerfully plotted and beautifully written, I like the fact, too, that it allows itself a leisurely pace to allow for generous character development, which pays off handsomely as the characters and their narrative and growth arc are the story and you have become completely invested in them and in their fate.
Garth Nix himself has remarked that both Lirarel and Abhorsen should be read as two parts of the same book.
So far it starts off much better than Sabriel. I remember with Sabriel it took me some time to get into the story. But not with this one, I'm already hooked!
I raced through Sabriel like my pants were on fire, a friend had recommended this series to us around the time my husband's cancer treatments were not going well so the journey through the gates of Death, well, ---just had to get through those bits quickly. Almost didn't finish Sabriel or begin Liriel but needed something in all the hours between 12 & 5AM and Liriel was wonderful, so much better than the first volume. I loved the Disreputable Dog.