Hey, I just noticed that if you export a bunch of gradient fills to CMYK Tiff, it makes a better output blend than if you take the same image and export to RGB Tiff and then convert it to CMYK in Photoshop. Try it on a blue to green gradient filled object and you will see that the gradient CMYK Tiff that Xara exports has a much smoother transition than if you try to do the conversion in photoshop.

s.g.