I'm sure there are some people on here that might have read it, but I haven't met many, so my pick is the Ender's Game saga. There are currently 19 books and I've read at least 10 of them. It's a really easy read, as someone who struggles to get into more complicated writing styles. Some people might be so-so about it due to some of the author's personal beliefs, but I really adore the lore itself. It offers a ton of different flavors to future visions, alien relations, psychology, and humanity.
I hear this a lot... But I really enjoyed Children of the Mind. I'm guessing people mostly don't like it because it feels like it lines up too much with some LDS stuff.. but if you just ignore that, or are blissfully unaware as I was when I first read it, it can be great and thought provoking.
That's about when I checked out. I couldn't tell you exactly why anymore but it just felt like the series had lost track of itself at that point.
But as long as you enjoy it, that's mostly what matters, and for what it's worth I don't think people really have a beef with him over the Enders series. More like the ones where he tries to say society will collapse because The Gays