I'm reading these cookbooks now and really liking them. I've also achieved chocolate chip cookie excellence. They're buttery, made with affordable flour, no weird ingredients, GF and dairy free. They may also be the most delicious cookie I've ever made. Top three, easily. Here's the link.
Some cooks use maple syrup to boost flavor, which is very smart, but expensive in large batches. I've learned that chocolate extract is an excellent replacement for butter, because imitation butter flavor sucks.