The MAC 162 is perfect for contouring the nose, but it's discounted. I have to agree with BeccaLovesMAC...go with MAC 275 brush.
If you're open to Non-MAC brushes I'd suggest Sonia Kashuk Angled Contour brush(black handle/solid black hair) from Target, it's the closet thing to the MAC 162.
Here's a pic:
Vimi Joshi one of the leading mac makeup artists suggested to me using 224 with MSF natural in dark. I'm NC40 and it looks amazing nothing copared to it.