I haven't read Spetner's book but I've seen a version of his argument that new species are too improbable. It wasn't even mathematically correct. I couldn't recommend any argument that bad.
I've also read most of Behe's _Darwin's Black Box_. It has two main arguments against evolution. The first is limited to what Behe can't find in the scienitifc literature - which by other reports seems to have more to do with Behe's ability to search the literature. The second is "Irreducible Complexity" which relies on Behe's unsupported opinion that the indirect routes are too unlikely to consider. I can't recommend that either.
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