He told her when she arrived that he had always thought music therapy was sentimental and superficial but that her papers were "entirely different." <br/><br/>OR:<br/><br/>He told her when she arrived that he had always thought music therapy was sentimental and superficial, but her papers were “entirely different.” <br/><br/>Comma after 'superficial'? <br/>'but that' or just 'but'?