Anybody know what the display type (e.g. IPS, TN) that are used on the Macbook Pro's? If so who make them?
It is not insane. There are quite a few TN Panel in desktop monitors that come close or exceed this.
The Dell XPS RGBLed Displays use TN Panels too afaik and they have much better colors. Color Gamut is really more up to the backlight than the Panel. Most manufactures only equip their notebooks with crap TN Panel that offer no contrast, terrible viewing angels and they have no reason to use a better backlight.
The benefit of IPS or VA Panels would be better viewing angels than even good TN Panels and much better contrast, also better calibration options. IPS usually also less banding than the others.