Sephora: New Concealer and Concealer Brush

I switched from my normal Clinique concealer to Too Faced, Born This Way, Naturally Radient Concealer in the color cool medium. Cool medium is described as: "light medium w/ rosy undertones."
The concealer is the perfect thickness and cool medium is a great shade for me.

While getting that at Sephora, they suggested the Kat Von D, Lock-It Edge Concealer Brush. I'm not massively into make up and thus don't buy things unless I'm convinced they'll change my life. The sales ladies said it was super soft and would get right up to my eye. Let's be real; I love it! It really does get up to my eye and is super soft. I use it everyday.