Stephen King's
Dark Tower series is excellent, and his book
The Stand is very good... It's not a saga, but it's long and involved enough that it could be. It's got to be longer than all the
Twilight books put togehter. I did not really want to like
Twilight, etc., but did (very simple writing but good story).
The Stand and is very deep and with religious themes.
Another series that is good (I just finished) is Dean Koontz'
Frankenstein ("the monster" is one of the series' heros!). There are 3 books, but supposedly he's coming out with a 4th this summer and there will be two more later. It was one I didn't expect to like, but really, really did. His
Odd Thomas (4 books so far) and Chirstopher Snow (
Fear Nothing and
Sieze the Night) series are also good.
It's fun reading series or long books where you really get to know the characters
PS sort of off subject but as a long, long time huge Stephen King fan, I just about loose my mind with joy when in his books, he will mention characters (sort of as backgroud) from older books. It's like a quick peak at what they've been up to since you last read about them! Dean Koontz also does that, but not very often that I've noticed (a connection to Odd Thomas comes into the 3rd Frankenstein book.)