Top panels: S/N of the clusters extracted with the proposed X-ray matched filter (left panel), the classical SZ MMF (middle panel), and the proposed X-ray-SZ MMF (right panel), averaged in different mass and redshift bins. White lines indicate smoothed isocontours corresponding to a S/N of 3, 4, and 5. White bins indicate a S/N greater than 20. Bottom panels: average difference between the S/N obtained with the proposed X-ray-SZ MMF and the S/N obtained with SZ MMF (left panel) and the X-ray MF (right panel). White lines indicate smoothed isocontours corresponding to a difference in S/N of 1, 2, and 3. White bins indicate a difference in S/N greater than 10.