I've had noticeable differences with my monitors (although they are a few years old). Even though I have two identical monitors the colour profiles were quite different to start with.
Oh yea, I wasn't being precise -
sure you'd do it once initially (but for this I wouldn't buy a calibration unit but get one from a friend) - was just thinking that then the modern displays "stay that way" and don't need to be re-calibrated every so often.
I've had noticeable differences with my monitors (although they are a few years old). Even though I have two identical monitors the colour profiles were quite different to start with.