I'm NW20. I have the Light Neutral, Sunkissed Fair, and... something else, which doesn't matter. Light Neutral is *perfect* for me. Sunkissed fair is kust a tad too dark. The other one was too light. I'd advise you to do a live chat with them as they would probably know which colors you'd want. I did this with my old foundation. I told them "I use ___, and it's too ___ for me. Could you recommend some shades for me?"
However, I have acne prone skin and I don't use their samples often. They broke me out. And I'd definitely recommend the flat-top buffer brush!