24 or 30 is what most people use. I suggest getting used to 30 since it looks much smoother then 24, even though it's 6 frames more (trick of the eyes). Also web players like YouTube run at 30 fps, so it would display better if you were to put it on there. Lastly, our eyes see 30 fps, so it just looks better on your eyes, which goes back to my first reason, it looks smoother and that's one of the reasons why.