I really liked the Castrol Edge Titanium in my Volvo. That was a 2.5L turbo 5 cylinder that loved to rev and sounded great while doing that so I drove it pretty hard and was getting 12-13k between changes. After my free oil changes on this car I'm going to use it because my previous experience was so good.
I think for the price difference of a gallon and a half of gas I would go for the really good oils over the good ones. When I've used Pennzoil Platinum or Mobil 1 I was a quart low at 2k and then needed a full change at 6k. I also don't think the engine "sounded" as good especially at start up and at higher revs sounded ratty not smooth.