I'm told thatacorns from the white oak family are the sweetest. White oaks produce every year, red oak family every other year. Most White oaks 20 + years before they produce acorns. I believe NWTFpromote Burr Oaks and Sawtooth Oaks, two of the fastest growing / acorn producing in the white Oak family. They say a Burr Oak can produce as much as 150 pounds of acorns in a season and should start producing in as little as seven years.