Comparison between stellar mass estimates from both KiDS-450 (left) and KV450 (right) with those from both the GAMA and G10-COSMOS samples, for those sources which overlap. KiDS-450 masses here are derived using the KiDS-450 photo-z (i.e. with H12 prior) and only ugri photometry. Both KiDS datasets are shown with masses which have been corrected using our fluxscale parameter. Sources in the comparison samples are selected for comparison only if their masses have been estimated using spectroscopic redshifts. The figure demonstrates the significant improvement in mass estimates that is made when using 9-band photometric information and, in particular, significant reduction on the scatter of the deep G10-COSMOS dataset. Scatter in the highest-mass GAMA sources is due to the updated photo-z prior, which is optimised for sources fainter than many high-mass GAMA galaxies.