My top 5 brushes, all affordable :)
Ecotools Airbrush Concealer Brush, $4. 
ELF Studio Contour Brush, $3. 
Sonia Kashuk Blending Brush (from a set but you can find a similar one from Ecotools or Sonia Kashuk permanent line. I can’t live without a fluffy blending brush)
Real Techniques Expert Face Brush, $9. 
Real Techniques Blush Brush, $9.

My top 5 brushes, all affordable :)
Ecotools Airbrush Concealer Brush, $4.
ELF Studio Contour Brush, $3.
Sonia Kashuk Blending Brush (from a set but you can find a similar one from Ecotools or Sonia Kashuk permanent line. I can’t live without a fluffy blending brush)
Real Techniques Expert Face Brush, $9.
Real Techniques Blush Brush, $9.