Just two. One are my original pair, which I cheaped out on big time and replaced after not many miles. The second is my pair I use for all road rides. I have two different pairs of booties to use for various cold/damp weather, or open the vent in the sole and ride in the summer.
I have a crush on the Giro Empire shoes. The new ones especially, but I don't need any more shoes for a looooong while.