I wish to self study condensed matter physics. I believe the Kittel and Arschcroft&Mermin are the most popular textbooks. I have read that Kittel is not very clear, however it his half the price of A&M on amazon. Also, my background in Quantum Mechanics comes entirely from Griffiths' intro, and its treatment of periodic potentials and band theory was limited to a simple one dimensional example. Might either of the two textbooks be too advanced for my background in QM? Are there any other good textbooks?