My 2 cents:
I run an OE quality filter and Mobil 1 5w30. I also drive the car fairly hard on a consistent basis. In my opinion it's not wise to go any more than 5k miles between oil services, that goes for any car. Considering how the car is driven, I typically run (no more than) about half a quart over spec on oil level. Just gives you a little more "headroom" on oil level when you're driving aggressively.