It's a recent thing for me. Right now, I'm experimenting, looking for something readily available and not too expensive.
Flour:
Didn't like all-purpose. Sticking with bread flour.
King Arthur--Crispiest. Almost too crispy, like a cracker. $1 more per bag than the others.
Gold Medal--Breadier, has a strong chew to it.
Pillsbury--Just bought. We'll see how it goes.
Cheese
Sargento over Kraft.
Sauce
I've tried a bunch of different brands and styles (whole, petite, pureed). No right or wrong, just depends on what kind of pizza you feel like having.
Hunt's has a resealable tetrapak that is really convenient.
MuirGlen Organic Tomato Sauce is good. I wasn't expecting it to have ingredients other than tomatoes though.
Pepperoni
Wilsons is my favorite so far.
Hormel wasn't bad, but not great either.
There's a local comany, Ezzo, that I want to try. Not sure if they sell retail though.