Here is a great brush set for starting or intermediate customizers. Works great and has six brushes that are perfect for broad, thin, and detailing certain areas.
These are a very nice quality Princeton paint brush set that comes all together.
The set of six synthetic Golden Taklon set contains short handled brushes: Round 1, 6, and 12, Liner 2, Angular Shader 1/2, and Wash 3/4. Use them with any media.