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I had self-studied Griffiths(~ 4 chapters), and Sakurai (~2.5 chapters) for quantum mechanics some months ago. Now, I have to take a course in QM this sem, and I want to further my understanding of basic QM. I am looking for a textbook that is more advanced than the one mentioned above, possibly more mathematically inclined, and that will give me a different perspective. In particular I am looking for a book that is more modern and discusses QM, through examples in modern theoretical physics. Also, I have been trying to study QFT, but I think I lack in my understanding of QM, and don't have enough intuition (I don't know if it is possible to develop physical intuition in QM. But I at least want to develop some kind of mathematical intuition).
One book that comes to mind is Ballentine - Modern QM. But I went through it, and I didn't find it that detailed. So, it would be great if you could recommend some other book.
I also know about Cohen-tannoudji et al, and I don't quite like it.
Some online concise notes, that give a different perspective would also do.