How do you choose a home?

Anyone who sees us on a regular basis knows that Greg and I are hoarders of data and will investigate any problem from 872 angles. Some good friends of ours recently bought a new car without even mentioning to us that this was in the works. When we buy a car, we test drive and test drive again. Greg makes Excel spreadsheets with car dimensions (really) and mpg ratings, and about 11 months and 124 conversations later, we buy a car.