Well, get decent tomatoes and make your own sauce.
Good quality tomato is just incredibile.
Here in Vancouver, Via tevere makes an shockingly good tomato sauce, to the point that I get only margherita as pizza, because the flavor is so intense.
That being said, neither of them is better than the other: provola, mushrooms and truffle on a white base will blow your mind.
It's just that here in north america, they have so little choice in toppings, everything is pepperoni, something spicy, chicken everywhere. Damn!
I'm an Italian who now lives in Canada