I read those Dispossessed and LHoD in the 80s, and then reread them more recently, and I’m amazed at how well they hold up. So often stories and sensibilities feel dated when you get to many decades from when they were written, but those two books could have been written yesterday. Both masterpieces, for sure. I’m not sure who you feel they’re inappropriate for teenagers though.
I never read City of Illusions - at least I don’t think I have. I’ll add it to my list. What do you think of Three Body Problem? I read the book and didn’t really care for it (I know I’m in the minority there).
That book won a lot of awards, but it really didn’t do it for me. I don’t think it’s because it’s so slowly paced; I’ve thoroughly enjoyed lots of books at least as slowly paced. Maybe it’s that I sat down to read a SF book and for half of it it just feels like we’re reading a journal, with nothing especially noteworthy happening. Or maybe I just wasn’t in the right place to enjoy that one.