It should be worth noting what I like and what I don't.
I prefer "smooth" root beer, with not too much anise flavor. I don't care for herby or spicy flavors in my soda.
With regards to non-root beer soda, I like sugary and syrupy. If it's a traditional strawberry soda, I want it to be a little "rich." I'm not against subtle flavors, but I tend to want to know what I'm drinking.