<p>The extra amount you’d pay is worth it for MIT, in my opinion. The undergraduate research opportunities at MIT are much better than Cal because MIT is a private school and focuses way more on its undergrads. The biggest perk of the Regents scholarship is the priority registration, but as arrhenius said, priority registration at Cal is not too much of a perk in comparison to the ease of registration for classes at MIT. Congrats on getting admitted to MIT EA. I would say you should jump on that opportunity and not interview for Regents to leave room for people who really want it.</p>