We all know that custom installers need equipment that has discrete codes and has good audio and video quality. The DTC-100 is not the best product ever made, it has its problems but when we are talking compared to the Mitsubishi/Hughes receivers, come on give me a break. Those receivers are about as low quality as you can get. I would imagine if you asked each CUSTOM INSTALLER on this site 90 percent of them use the DTC-100.