While the Suqqu Cheek Brush, Wayne Goss 02 and Surratt Cheek Brush aren't identical, I think they are similar enough to compare. 

On Instagram, I posted the picture above of the new RMS brushes.  The swirly one on the left is the RMS Skin2Skin Foundation Brush $38, and the one on the right is the RMS Skin2Skin Cheek Brush $34 (made to be used with their Lip2Cheek pots).

I'm not that educated when it comes to brushes, but one thing I have learned over the past couple of years is that brushes absolutely do make a difference! They can help your shadow blend more seamlessly, some hairs are better for certain types of products (creams vs. powder for example)...but a lot of it boils down to personal preference - much like most things in the beauty world!