I'm a junior. And i dont know whom I will be asking for recommendations once it's time to apply... I took an upper-level course with few students and I did not get along with a prof, so can't ask him. Should i take another upper level course next semester, or what? I figure in the summer I'll get a PI to write me 1 recommendation, but I also need some from profs that taught me in classes. I'm afraid if i take another upper level course this spring, i'll be overwhelmed with course load.