Tech support is excellent, and Deneba releases frequent updates to fix problems as they are encountered. For linear elements or planar surfaces, DenebaCAD is an extremely precise and fast tool. While most of the snapping options are intuitive and logical, the lack of a snap to end option makes editing of curved surfaces ridiculously tedious. Visual feedback of selected objects is another weak point. Since the only way to tell if an object is selected is to find its handles, one must typically zoom out repeatedly to see most of the object simply to verify that it is in fact selected.
Most tools permit zooming and panning whilst drawing, making workarounds straightfoward.
Custom toolbars and custom key commands are not permitted, although most commands have keyboard equivalents. Those with dual monitors will really appreciate the extra screen space for palettes and the possibility of maintaining several views open simultaneously. Palettes Layer management is comprehensive, with the ability to group layers together and to select all objects on a given layer without turning all others off. However, the layer palette, like all DenebaCAD palettes, is not resizeable, meaning that you should plan on losing time scrolling. The Properties palette is a mixed bag.