Smudging can make good tags, but you have to have good technique, colors, and settings. When you say C4D tags do you mean C4D text tags or tags that use C4D renders? Because C4Ds really help build spacial orientation inside of a piece. They help give points of reference and force light and shadow if done right. You don't have to put 30 C4Ds in a tag on overlay. One or two C4Ds to help with the flow, depth, and lighting is plenty.