I like to run a full synthetic (Mobil 1), mainly because it doesn't thicken up as much in the cold. Conventional oil pours like molasses when it is freezing out. I also run 6000+ miles between oil changes, used oil analysis from both V6 and V8s has shown that the 5000 mile interval is quite conservative, and that most oils can go for 7500+.
Another +1 for the OEM filters (the commonly available 90915-YZZD3 ones). They are cheaper and higher quality than other store bought ones I've used.