I just bought my Early 2011 MacBook Pro from the Apple refurb store, and saved myself about $300. It is the best place to get a refurb, and the computer looks brand new. Apple changes out the casing, battery, and any part that didn't pass quality control, so you should be good.
IMO, it is BETTER to buy a refurb than NEW, as it does go through more quality checks than a new computer.