What are the best pre-doc RA positions in terms of getting into a top PhD program: NBER, SIEPR, Stanford GSB Research Fellows, specific labs/profs, a particular university?
Secondary question: what are the most important considerations for choosing an RA position? What matters most: tenured professor, high-profile professor, high-profile department, work in your specific subfield, professors' only RA vs. working in team, etc.?