I am currently taking a second course on QM (at undergraduate level). The official texts of my course are Griffiths (we are covering the second half of it) and Shankar (for everything that is not in Griffiths). But after reading Shankar for a while, I found myself not really liking the book too much. I particularly don't like the way he often omits many of the details in his derivations (well, I know sooner or later I'm going to face books even harder to read than that, i.e Jackson) and also the way the book styles / formats the equations . So I just wonder if there are other books (or whatever online resource) that cover at least as much as Shankar (from the basics all the way up to symmetry, relativistic QM and possibly path integrals) while staying at about the same level as Shankar? Thanks.