Yes, it is a crucial factor for any televisions as we all know that viewing experience differs from one corner or the TV to another, especially when the viewing angle of the TV is limited. When you have a large space with sofa on three corners, you can stay assured that center positioning sofa will enjoy amazing picture quality, but the people sitting on the other two sides might have the compromise if you do not check the viewing angle. 178 degree is a great viewing angle as it ensures everyone sitting in the room enjoy equally.