After 3 months of use, my Crossover 404k monitor developed a vertical band of color distortion covering 1/12th of the screen (320 pixels). I verified that this effect was present on different GPUs/computers/operating systems/HDMI and displayport cables, so it's 100% a defect in the monitor...
The SM951 is in production but the only way to get one currently is to buy it off of someone selling one taken out of a laptop. It won't hit retailers for about 14 weeks. This is the first claimed benchmark:
Anyone looking at the XP941 may want to hold off if they can wait about 3 months...