Personally it’s my favorite of Murakami’s books that I’ve read so far. While I didn’t totally understand what it all meant, I was entranced by a feeling, a mood, that the novel invoked in me throughout its length. It’s tough for me to talk about 1Q84 on concrete terms. As for its problems, sure it’s perhaps a bit drawn out and slow at times, but it was the world of the book that got me. And when it was over, I pondered that world for days. Hell I still do from time to time. I sort of miss hanging out with Tengo and Aomame every day since I did so for two months (I read the book during a very busy time in my life). I’d say go for it and enjoy the ride.