I have to say I own a lot of Mac brushes and now have quite a few Sigma brushes and I love them just the same! SIGMA BRUSHES :: Dupe List for Mac Brushes. I have a bunch of both, and it is true, they ARE great dupes.
Heres another handful of similar brushes! These Morphe brushes are all pretty similar in shape to the MAC Cosmetics 224 but Id say the closest dupe is the Morphe Brushes Have you tried any of these? Which is your favorite? by dupethat
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.