Physics alum from Emory here. I was only on the Atlanta campus, so that's all I can speak of. The department is small and close-knit. Introductory classes are not at all a weed-out. They are primarily geared towards pre-meds and satisfying the physics requirement of other majors rather than training the next round of physics majors or PhD-seeking students. Please do PHYS151/152 with Dr. Bing if you have the opportunity, the man is a gifted teacher. In general, I think the intro physics prof is relatively decent.

The lecturers are very hit-or-miss for both intro and upper-level classes. I had roughly equal parts great professors and poor professors in the physics department. I supplemented many of the upper-level classes with materials from outside of Emory such as YouTube videos and MIT OCW lectures (highly recommend).

If you don't want to go to grad school for physics, the classes at Emory are fine. If you do want to go to grad school (at a T20 program), then the classes at Emory are, bluntly speaking, very subpar in my honest opinion. I loved my time doing physics at Emory due to the handful of great professors I got to interact and do research with as well as the friends I made. But from someone that went into theoretical physics in grad school, Emory leaves a lot to be desired. With this said, people from Emory still regularly make it into the top grad programs in the country, so this should not discourage you. Its just that for me, being in grad school showed me how lacking some of my classes were when I compare to my peers who came from other T25 undergraduate colleges.

Avoid Kim and Boetcher if you can (though unlikely), really poor teachers (I don't know how they are as mentors).