I'm a Courant MathFin graduate. In terms of brand and prestige, Courant is definitely better. However, I've got to admit that NYU Tandon is more aggressive in terms of job placement in recent years. The placement stats of Courant on quantnet is reliable. I think the companies or positions Courant graduates go to are often better. You can tell this by the salary. You can also look on LinkedIn to see where did graduates from these two programs go. Just keep one thing in mind, the number of Courant alumni is much smaller. We used to take less than 30 students. Even today, we only take about 50 students. Anyway, if you decide to come to Courant. Feel free to email me for more information.