The Bob's your oil guy web site has a forum that goes on and on.
http://www.bobistheoilguy.com/forums/

"What is the best oil?" is an open ended question that can be talked about for hours.

The best deal for me is whatever the wife brings home from Costco.
That used to be Chevron Supreme 5W-30W.
Now I am getting Mobil 1 5W-20W.

These new vehicles are getting better fuel economy by being designed for thin oils.

They are recommending different oils depending on how many miles you have on your engine.