I've just finished The Shadow Rising, and it's definitely the best of the series so far. It has taken four books, but I finally feel invested in this series to the point where I really, really care what happens. I think before this I would have been fine never finishing the series, but now I'm at the point where I might pick up the next book right away. I can't wait to see what happens next.
I just read that A Memory of Light, the final book in the Wheel of Time series, is set to be released January 8, 2013. I see a lot of complaining from faithful readers of the series about having to wait so long, and I can definitely understand that. I hate waiting. But it's great news for me. I'll have plenty of time to get all caught up, and be ready to read the final book when it comes out. So I'm selfishly happy, but I do feel sorry for all those who have been waiting so long.