The Five Gospels, by Robert Funk and the Jesus Seminar, the original
1993 hardbound print edition [1]. It has the full annotated texts of
the four canonical gospels and the gospel of Thomas in the best
available modern English translations, with each passage color coded
based on a vote by the reviewers about how close to the original
sources they think it is.
[1] https://en.wikipedia.org/wiki/Jesus_Seminar