For me, it has to be Pineapple! I just love pineapples on pizzas, I love pineapples overall lol. It gives it a tropical twist which is something different that I love and being from Jamaica, the tropics, I have to have that! What about you?
I would say spinach, although it gets old after a while. I have always liked Margherita so that is probably my all time favorite. Spinach is quite an uncommon one though, so I would recommend everyone try it.
To me they are all delicious. I never buy just one topping on my pizza. I usually combine them. One half pepperoni the other half sausage. It cost a little more, but it is definitely worth it The topping i buy the most would Pepperoni.
My favorite Pizza topping would have to be Philly Cheese Steak. I tried it with one of friends a few years ago, and i have been hooked ever since. before that experience i had only eaten Pepperoni. I had no idea what i was missing out on. Now i only eat Philly Cheese Steak pizza.