I have been using Spyder2 Express for a while now, religiously calibrating every 14 days. When I went to print out my first 8×10′s for portfolio shots, they were all darker than I had hoped for. I had my printer person come out, and calibrate for me with her Spyder3Studio software, and my red/blue/green colors were way off! Turns out what actually looked grey, was blue/grey. What a huge difference! My prints looked so completely different after she calibrated for me.
I now have added a new calibration software to my “desperately needed” list!