I plan to buy a new iMac 27" 2.8GHz Quad i7. My question is in calibrating the monitor. I have read that on the 24" monitors(or 21? one of them) there is a brightness problem & some of the calibrators can't function because the monitor is too bright therefore requiring "Shades" or "Coloreyes Display Pro" to enable the calibrators to work. Is this a problem for the 27" monitor? Which calibrator will inclusively do the job on this monitor(without buying additional software to enable it), Colormunki?, Spyder3? Question #2: If I want to add an additional monitor similar to that which the 27" iMac has what are my options & price. I would want both monitors to be the same resolution but I see Apple doesn't even offer one the same resolution that I can find. I believe the Dell 2209WA is available again, a viable option/compatible but don't know the resolution. I assume the 27" is 24 bit color and IPS so I would expect the second monitor to be also. Do I need additional wiring to do this, do I need another graphics card??