Only two from which to choose
Basically there are two different types of volleyballs, indoor and outdoor. Leather is always preferred for indoor balls; however, you may want to choose a good synthetic if you are going to play outdoors near water. There is not much difference between the top indoor volleyballs, but when it comes to outdoor volleyballs, spending a little more on a known brand like Mikasa or Wilson will make all the difference. If you don't think quality makes a difference, you'll probably change your mind after returning the serve of a cheaper ball. Your arms will be red and stinging after playing the game with a cheaper ball.
There is not much difference in quality between the more expensive volleyballs. Good volleyballs are constructed with a layer of eighteen leather panels around a cloth layer around a rubber bladder. Real leather allows the ball to age without much change in the play. Some Tachikara volleyballs are received better after they've seen some action. General wear-and-tear usually benefits the arms of players. When it comes to choosing between leather and synthetic, synthetic leather just does not compare to the real thing. Cloth-covered volleyballs are great for practice, but long term use usually finds the ball misshapen due to a bubble in the bladder.
With an outdoor ball, you'll want a ball that is durable and doesn't wear out quickly. Of course, you'll want to stick with a leather volleyball, preferably one with raised seams so the ball doesn't surprisingly sting you after every hit. Another important factor to look at when buying an outdoor volleyball is its ability not to absorb water. A ball that absorbs water is not a good buy, especially, if you'll be playing on the beach.