I have the same precise problem. I have been accepted to both schools. I felt very good at SCO, and not so much at SCCO, but still both have very nice facilities and reputations... very good board passage rates. I've deposited at both schools, and have until March to get a refund from either one or the other.
TUITION:
SCO: 22,000
SCCO: 27,000
COST OF LIVING:
SCO: $500 - $800 monthly rent (cheaper if you share an apt)
SCCO: $1000 - $1600 monthly rent (cheaper if you share)
SCO has given me a $5,000/yr scholarship.
SCCO won't announce scholarships until next Aug.
Since I'm from Utah, I could get a $15,000 per year discount on SCCO, but that won't be announced until next May, after the March refund for my deposits.