Public Service Announcement: 318/5.2 vs 360/5.9 Magnum Which is the better deal?

It starting . High dollar build 318's are turning up on the market place. But which is the better deal? The Built 318 with go fast goodies or a 320 HP 5.9 Magnum From Summit or Jegs? How valuable is a warranty or dyno sheet?
What say you?