Consider a scenario wherein a financial services business wants a postcard to send to their clients, their clients being other businesses and organizations in the financial and legal fields; the postcard announces their new level of certification which qualifies them for handling specialized financial services. As a marketing piece it should communicate an attitude of: "We aren't a big business, but we are absolutely professional, have decades of experience, and the service you'll get with us will be top quality, creative, and personal."
Obviously there are many types one could employ here, but consider this one artificial constraint: it is to be either FF Scala Sans or Atlanta. One or the other. Without poisoning the well, I can say that I'm not so much seeking guidance — I already know what I think — as I am curious for anecdata of a consensus of expert opinion. So, if you had to choose between the two, which one would it be?