wait until 1000 at least, or until the manual says, and you don't want to go off running out and buying some royal purple (or even any synthetic) for the first 5,000 miles really.. most of the engine break in happens the first 1-2.5K miles, but additional break in happens after that as well, and because of that, high VI oils will prevent said break-in because of their high film stregnth, which is never a good thing.. so if you must change your oil using a good quality conventional, such as some valvoline or castrol GTX.
the OEM oil is crappy not because they cheap out on it, but because it needs to be crappy.