After a great deal of sifting through LCD options, I have decided on a compromise between size , cost and pixels per inch, aka high resolution! I was going to do a single 7 inch , but I prefer a wrap around approach where I can have side screens dedicated to the 120 degree blind spot cameras. Three were ordered, so I can potentially have one centered and one on each side. High resolution and refresh rate are very important when your eyes are only 2-4 inches at focal length from the screen.