In my opinion it is better to carefully choose particular colors that you like, than accept a fixed set of colors, some of which you will rarely ever use. The other disadvantage of buying a set of paints is that you will also have to pay for all the colors, regardless if you use them or not. When you take the time to choose the colors you want and need, you will be putting something of yourself into your paintings, and in the long run it will make you a more confident painter as well as saving you money.
You can learn more about choosing colors and setting up a paltter from my free e-book: CLICK.