Do you mean tilt or pan?
I like having both features, however I like being able to adjust the amount of tension of each feature as well. Pan I like for shooting movers or for shooting multiple targets. Tilt is nice because not everywhere I shoot has a level surface, and instead of adjusting the legs I just give it a little tilt. But like I said I like being able to put tension on the pan/tilt feature. Just enough to where it will stay where it is without holding it but will still move without having to go gorilla on it.
Out of curiosity, what bipod did you choose to go with? I think I saw a thread where you were trying to choose, but I don't remember which route you ended up going.