With starter clubs (or there about), look for a ball with increased feel to slow the meter down, and increased distance.
Don't spend a lot of money on balls with increased spin because you don't have the clubs to take advantage of it. You could have the Nike S ball, but with a starter wedge, it's just not going to make much of a difference.
I would start with a modest upgrade to see how it affects your game, then experiment with others to see which one you like best.
When you buy some quality wedges and learn all the shots around the green (full swing, punch, flop, pitch, and chip) and when to use them, that's when you'll want a high quality ball.
If you're still trying to figure out the difference between these shots and when to use them, you might just be developing an expensive habit unnecessarily.
The gear and ball will eventually choose you, not the other way around. Until then, remember that it's a game of graduation, learn the little differences before trying to make a major change.