What fuel brand(s) do you run?

Personally, I try to stay with the Top Tier Fuels, my options are Chevron/Texaco (both use Techron), 76 and Shell. Top Tier Fuels are primarily based on the detergent package. From the research that I have done premium gradeShell has significantly more detergents in it compared to the other grades. Ican't find any evidence that the other premium grades have different levels of detergents compared to the regular grade fuel. It seemed like I got slightly better fuel mileage in my Tundra with 76 fuels, but I don't know what the difference was/is.

I am considering filling up the MS3, when I pick it up, at the Shell across the street from the dealer and then staying with Shell as much as possible. The closest station to my house is a Shell and the prices are reasonable compared to the other local stations.

I know it doesn't make much difference as long as I run quality fuel, but it seems that the engine might do a bit better if the fuel is consistent.

What are your thoughts? Am I a moron?