Not going to find much. Since IPS has closed the gap on speed and response, IPS is the defacto high end for the most part these days. There is no real advantage to TN besides being cheaper. And that is changing now too. You can get pretty good sub $200 IPS screens for office/work use. The days of the TN panel are looking to be coming to an end. My guess, TN will die soon. IPS will be the standard and OLED will come down to fill the high end area more. Then the next new tech will push those out.