the builds that your customer wants/needs. Build frequently so that you can manage expectations.
Responding to Change over Following a Plan: SCM is about facilitating change, not preventing it. By building frequently and appropriately you and your customers will have a better idea of how things stand and what to change.
Building sounds like an obvious process, since you must build to have running software. But it is also an item where small improvements can make a big difference in your productivity as a team and in the quality of your software. As SCM Professionals, we appreciate this more than anyone.