Leigh > Status Update

I have two very long, eventless shifts a week at work and I'm determined to begin reading a long series during these slower times. I'm considering the following, but I tend to struggle committing to a long series. Which of the following remains engaging and well-written throughout?

-Wheel of Time
-Legend of Drizzt etc etc etc
-The Witcher (of which I've read the short stories ages ago)

Thoughts?