I am wondering what would be a good continuation of courses to take after QM 2 (taking it currently, both semesters Griffiths based, but using other books as supplements). I have an option of taking a Condensed Matter course (QM1 is a prereq) in Spring. There were also suggestions for a full semester course in Special Relativity with thoughts of preparing for QFT. Lastly, I was told a Classical Field Theory would also be a good idea (Landau based). I dont have a specific interest yet. Condensed Matter is exciting, as well as Particle Physics.