The base resin for a xerographic toner is typically selected on the basis of its melt rheological properties, especially for highspeed printer applications where imaging fusing performance requires a “low-melt” toner. However, a base resin may also strongly affect the triboelectric aging performance of a xerographic developer. For example, the interaction of a toner charge control additive (CCA) with toner and carrier surfaces will depend on CCA / toner base resin compatibility. Similarly, residual chemical species from the resin polymerization process may act as carrier “poisons” (and thereby degrade or enhance the tribo-charging ability of a carrier). Additionally, a toner base resin can also affect xerographic image performance (via the image density: image development potential relationship), and thereby affect imaging latitude and imaging process control.