When I went in for the Hello Kitty event at Nordstoms, I asked the MA to use this foundation and concealor. First of all every MA at MAC I've gone to has classified me as NC45. And just like most of you, I go at least once a month for all the new collections. I get makeovers about every other month.
This MA told me she didn't think I was an NC45. She said at least not year round. So she use NC42 on me. Not only did the color match, but I really enjoyed the foundation. I'm not sold on the concealor though. It seemed to be seeping into my lines (the few I have). She didn't use that much and I kept it on all day. I have a really oily tzone, but I get oily using my Satinfinish as well (I'm the only person I know that cannot stand Studio Fix). However I was just slighty oily compared to normally after 6 hours of wear.
So when I get paid next week, I'm going back to get the foundation in my new shade and a 190 (think that's what she used) brush.