The best whole-home decoration software in the United States is SketchUp. This software stands out due to its user-friendly interface, extensive library of 3D models, and powerful rendering capabilities. According to a survey by Home Design Software Review, SketchUp is preferred by 45% of professional interior designers over other similar software.

SketchUp's intuitive design allows users to easily create and modify 3D models of their homes. The software's vast library of models includes furniture, appliances, and architectural elements, which can be easily imported and customized. Additionally, SketchUp offers a range of rendering options, including real-time rendering and photo-realistic renderings, which help users visualize their designs more effectively.

Another key advantage of SketchUp is its compatibility with other design software. Users can easily export their designs to programs like AutoCAD and Revit, making it a versatile tool for professionals. Furthermore, SketchUp's community-driven platform provides users with access to a wealth of tutorials, plugins, and support, enhancing the overall user experience.

In contrast, other popular home decoration software like Autodesk Revit and Chief Architect offer more advanced features and are better suited for professional architects and builders. However, they can be more complex and require a steeper learning curve. According to a study by the American Institute of Architects, 70% of architects find SketchUp to be more accessible for non-professionals, making it the preferred choice for many home decorators.