Revit and AutoCAD Architecture are both powerful design and drawing software, but they have different approaches and features. Here are some key differences between Revit and AutoCAD Architecture that can help you make a choice for drawing timber frame projects:

Revit:

1. BIM (Building Information Modeling): Revit is a BIM software specifically designed for creating detailed, intelligent 3D models of buildings. It emphasizes the creation of a centralized, collaborative environment.
2. Intelligence and Data: Revit models contain intelligent objects, meaning that each element in the model contains important data about the building, such as dimensions, materials and building components. This makes it easy to make changes and ensure accurate quantities and production drawings.
3. Parametric Designing: Revit enables parametric design, which means that changes in one part of the model are automatically updated throughout the model. This can be useful for optimizing designs and quickly generating production drawings.
4. Collaboration: Revit has a strong focus on collaboration between different disciplines within a construction project. It allows real-time sharing of data and changes with architects, engineers and other stakeholders.

AutoCAD Architecture:

1. 2D and 3D: AutoCAD Architecture offers both 2D and 3D drawing capabilities. It is more traditional in terms of drawing and modeling compared to Revit’s specific BIM approach.
2. Flexibility: AutoCAD Architecture is very flexible and adaptable to different design styles and construction projects. It is a good choice if you have projects of diverse nature.
3. Detailed drawings: The program is strong in creating detailed 2D drawings and is suitable for complex drawings with many details.
4. Blocks and symbols: AutoCAD Architecture uses blocks and symbols, allowing you to work faster and more efficiently if you are already using libraries of blocks.

In short, the choice between Revit and AutoCAD Architecture depends on your specific needs and your preference for BIM versus traditional CAD design. If you need detailed 3D modeling and advanced collaboration, Revit is probably the better choice. If you want more flexibility and adaptability, AutoCAD Architecture may be appropriate. It is also possible to use both programs, depending on the project and requirements.