I just finished Cryoburn, I agree it isn't as good as early Vorkosiogn, but it is still heads and sholders above a lot of other science fiction. Also check out the early Honor Harrington series, also very good and at points sort of a mystery.
If you are looking for more, I have been trying to make a system (mostly for myself and my son) to help me find new book recommendations that match stuff I already like. If your interested its at
homeofreading.com
And do check out the vorkosiogn series....one of my favorite book series of all time (for both sci-fi and non sci-fi)