When assessing which version of the S3D design the participants preferred, one participant failed to answer the question, and thus we gained 26 votes. The alternative where disparity was used together with frames was the most popular (13/26). Not surprisingly, the also other versions with additional visual cues - dim and frames (7/26), dim (4/26) - was preferred to the disparity only version (2/26). However, somewhat contrary to our expectations, the option with two additional visual cues, dim + frames, was not the most popular design. The use of frames only was liked the best, as the dimming effect was perceived to hinder seeing the content. It was also mentioned that it was hard to know whether the image itself was dark or purposefully dimmed.