Chemerinsky v. Tribe

I still need an good introductory text to US constitutional law…introductory for someone who has done six or so years involved in the acquisition of law degrees, that is. I am considering – for work and for play – acquiring Chemerinsky’s text Constitutional Law: Principles and Policies.

I have also been recommended Lawrence Tribe’s American Constitutional Law from the best of advisors (and have enjoyed the one by him I have read) but am now concerned that it is a 1978 text and apparently only a first volume of a never completed two text set.

Comments? Critiques?