It’s a good problem to have, trying to pick between BMW and Audi.
I believe SR is hotter in the summer. As somebody mentioned already the southern half of 4S is greener and it gets some breeze. 4S/Del Sur are closer to your workplace.
MR terms keep you insulated from some of the issues other schools might be facing. You do have to pay for that, unfortunately.
There is exactly 1 SFR in 4S with asking price of <$800K ($799K).