I think the Deliverance when set "flat" is slightly brighter than the UL set "flat" possibly. However, the UL has all the potential in the world to be "bright" if you'd like, due to the graphic EQ. the graphic EQ is an incredible tone shaping tool on the UL, even more so than the mark IV's by far I think. the Deliverance can get bright as well, they are just different "flavors" I guess....Really comes down to preference.