I will still tout the best introductory QM text that I've ever come across that do not skimp on coverage. It is Elmer Anderson's "Modern Physics and Quantum Mechanics". It is out of print, but you can still find used ones on Amazon.
What is so amazing for an INTRO book like this is (i) it covers various aspect of modern physics, including Special Relativity; (ii) it is one of the few intro books that actually have a good discussion on variational method, something that most intro QM texts leave out; (iii) one of the best text that I have seen at explaining and applying matrix mechanics, especially on matrix diagonalization and unitary transformation (the only other elementary text that does as clear of an explanation is Boas's mathematical physics text); (iv) it has the clearest explanation of perturbation method, something that I found confusing in books like Liboff and Messiah IF one has never come across it before.
It is highly recommended if you can find one (used ones are selling for less than $10 on Amazon). When I die, this is one of the books that I will be buried with, so that I will have something to read.
:)
Zz.