No need for a calibrated display. I do some scientific image capture but absolute color calibration is not necessary.
Basically I can get a nice Mac Pro and if I go with a lesser monitor I can more easily justify a dual display system and some bigger HDs, etc.
^^^ Don't do it. I have had two Cowon players and both have had horrible build quality. Add to that their non-existent customer service and they start to get into Singlepower league in my book.