Best child custody lawyer in St. Louis county?

My ex is remarried and I’m still paying alimony. My current lawyer thinks I’m stuck until they are potentially even out of college but is also a lower cost lawyer. Looking for someone who can help me understand my options and help fight for fairness for myself and children. Willing to pay the extra money for the best results. Someone ruthless and able to stand up to his very ruthless lawyer. Thanks in advance!