DesignCAD 3D Max combines powerful 3D solid modeling and easy-to-use 2D drafting. Compatible file formats include DWG and DXF. TWAIN compliant. Several modes are available: double-line mode, orthogonal mode, animation mode. Very easy to learn. Very easy to use.
Add-on software available: scanning, job costing & estimating, 2D & 3D symbol libraries, and a developer's toolkit. 3 multimedia tutorials are available to get you up to speed in a matter of hours.
2D only version is also available: DesignCAD Express.
Works with Windows 95 or NT and newer.
Priced at $299, the price/performance ratio can't be beat.