Re: [OT] Suggested Sci-Fi

Anything by Lois Bujold (except Spirit Ring which is excellent
but not SF).
A Fire Upon the Deep by Vernor Vinge.
Anything by Terry Pratchett (not SF but required reading
anyway).
Honor Harrington books by David Weber.
Winning Colors, Once a Hero, and other books in that series by
Elizabeth Moon.
Any of the Dominic Flandry books by Poul Anderson.
Horatio Hornblower books by CS Forester (set in Napoleonic Wars
ca AD1800 but read them anyway, great insight into the thoughts
of an aggressive captain).

Of course you've already read Mote in God's Eye, Gripping Hand,
the Prince of Sparta books and The Moon is a Harsh
Mistress...right?

That should keep you for a while.