I just bought the Spyder 4 Pro yesterday and after reading this thread I am even more confused. I had the same result as the OP, after I calibrated my Dell monitor and XPS laptop my photos look much worse to me and documents like word, explorer, basically any whites now look like they have a green tint. I was very careful to follow the calibration instructions.
However, until reading this thread I assumed that even though my photos look worse, what I am seeing is now 'correct' and I could post process my photos accordingly. The color between my laptop and dell monitor is now very close to the same and I was very impressed with the precision. I am sure I will now be able print what I see on my monitors.
But I also thought that now what I see is what another person with a calibrated monitor will see and vice versa. But if people are using multiple and non standard profiles, it won't work that way at all. Was I incorrect in thinking after calibrating my monitors, most people with a calibrated display will see my photos how they look on my screen and I will now be able to see their photos how they intended?
I will be happy to be able to print accurately but the main reason I wanted the Spyder was to be able to see images how other photographers intended and how they view them on their monitors, and vice versa. Is their a way for me to do this as best as possible? Is there a profile that is 'standard' among photographers? Or am I misunderstanding something- is the Spyder just meant to calibrate your monitors, projector, printers etc together and not align monitors around the world?
Sorry for so many questions. Any help is really appreciated. I also commend Raphael from Datacolor for following upon this! Much appreciated.