The checkbox graphic available is currently the default bluish blur that looks ugly on screen and on paper. There is the option to create one yourself but unless it is all rectangles, it is going to end up just as bad.   Telerik Reporting is superior in most respects but the Component One FlexViewer checkbox ( the actual check is font-based and the text lines up properly next to it with nice padding) is a thing of beauty and a joy forever. (see attached)  Please emulate it.