Nope: there's no one best prep book. Best is what's best for you the user, and the only way to tell that is to sit down with the book and schmooze for a while before buying.
Or buy (or otherwise acquire) them all, as you seem to have done...
If material shows up in more than one of the prep books you've got, chances are fairly good that it will show up on your version of the CSET, though possibly (or in some cases probably) not in quite the form that's in the book. If specific material shows up in ALL the resources you've got, the chances of it appearing on CSET - again, possibly in somewhat altered form - are excellent.
Is there a particular domain you're most concerned about? From your background I'd guess you'll do well on Subtest I, which is, after all, half history (and most of the rest is making sense in ways that Boosalis' Beating...! book, which is not always spot on, is mostly fairly good at); you'll be in fine shape for Subtest III if you also know a little about reading music and if your knowledge of either PE or Human Development is decent-ish. How you do on Subtest II may depend on what your undergrad college made you do by way of general ed, but if you've been following the threads here and the discussions are making sense, your chances are quite good.
If you've got specific questions about content, ask away!