If you liked Diaspora, you'll like Schild's Ladder. Zendegi is more psychological and a different kind of fiction, thus not much of my favourite.
Incandescence and Orthogonal should be grouped together; not bad, but different, and IMHO Orthogonal suffers from being a trilogy. They are also much more maths-heavy.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.