What do you use? Options

[turbohcar]

I know it's been talked about before, but I'd like to go a little more in-depth. Oil. Which grade to be more specific. I've read a couple VFAQs on it and had experience choosing oil (I change oil for a living at a Dodge dealership) for different vehicles. However, the only vehicle I am concerned about with this post is the 4G63T motor. Post what you use and why you use it. Like I said, brand isn't as important because most of the time it's a matter of opinion, it's more about the grade.
Right now I'm using Cenpeco 5w30. It's a paraffin wax based oil that is made for high performance vehicles. Pretty expensive but worth the price for an all race motor. I'll be switching to Valvoline Synthetic here the next oil change but I'm not sure yet which thickness. Thanks