I jumped all over the place looking for the best chocolate chip cookies until I found this recipe. These are, by far, the BEST! And also, easy to make. I'll give you the link, but you have to keep it a secret.
Browned Butter Chocolate Chip Cookies at Food and Wine website
One piece of advice, recipe says to refrigerate dough before baking. Be careful that it doesn't become too stiff/hard, otherwise it's tough digging to get the dough out and make the cookies. Last time I made them, I skipped that part of the recipe.
Also -- I use Ghirardelli chocolate chips from Costco. They're bigger than Nestles. And I make my own brown sugar. Not sure if that really makes any difference though.