We've shot 3 projects using both the RED MX and the Scarlet-X, interchanging the same lenses between the cameras as required. I must say that to my eye the RED MX is producing consistently less noisy, 'smoother' looking images than the Scarlet-X when evaluated on a 2k monitor. The Scarlet-X is set up to match the settings on the RED MX, but the RED MX just seems to produce higher quality images.
Has anyone else noticed this difference? I've read in earlier posts that the RED MX and EPICS have the 'A' grade sensors but I didn't expect the difference to be that noticeable when compared to the Scarlet-X (especially with respect to the noise level).