On buy side, I've seen a lot of resumes come through from CMU, UCB, and NYU MathFin. However, I question your assumption around limited growth within a bank. The industry is changing, for sure, with banks in the US having more limited balance sheets. However, a lot of the changes create demand for the same skill sets. Check the reviews for the different programs - they really do provide a lot of insight into the programs. It's a small sample for each school, but you can get a sense of the different career paths.