I always preorder, mostly because I prefer to be a reclusive shut-in and have the mailman bring me my games, but also because there are bonuses sometimes (content or art cards or steel cases or T-shirts or action figures, what have you). I heard Amazon will no longer be doing their 20% off preorder price, and Best Buy shut down its game rewards program, but I order almost everything I buy from Amazon Prime anyway so I'll still use them.