MY FAV BRUSHES! Real Techniques Brush Collection: Found at Ulta or online. These brushes are pretty amazing and they are especially wonderful to use at their inexpensive price point! Pro quality every time.
The Real Technique Brushes are great quality, and affordable. If you only want to invest in a few brushes to start, I suggest the powder brush, expert face brush, and the Bold Metals 200 Oval Shadow Brush. All are multipurpose.