How to get to and from Prospect Heights, Brooklyn to Morningside Heights, Harlem, NY by subway?

I'm having a hard time making a decision between moving to Prospect Heights or Morningside Heights. The reason I want to move to Morningside Heights is not because I'm going to school, but it's because of Koronet Pizza and they serve a large slice of pizza for $3.50 and I want to stay there but the other problem is I also want to move to Prospect Heights but I'm afraid if I move there. I won't be able to find a good pizza joint in BK. I'm afraid I might not find a pizza joint that serves large jumbo slices in BK that as good as Koronet Pizza. Please help me decide?! P.S. How far (minutes) does it take to go from Prospect Heights, BK to Morningside Heights, Harlem to go to Koronet Pizza on subway? Please help.