I have to pay about $12k for Boston College and about $11k for Stony Brook. I know BC is a liberal arts school and Stony is much more STEM focused, but BC does have a much better overall reputation. But I know for a fact that I want to do CS.
BC is adding an engineering program. They’ll be plenty of CS courses available over the next few years. Plus you’ll learn to write well at BC. Enjoy Chestnut Hill.