I purchased TurboCad 16 pro , platinum , for less than $300 , and it even came with a CAM addon for CNC ing
i persisted for 6 months , and learnt a lot , ( no CAD experience ) i use it for 3D all the time , and its quick , yer you have to plan what you want to draw ,
The biggest mistake you can make in 3D it to drag and drop an object , it wont end up right , use the boxes on the bottom of the screen , and type in the distance you want to move , the size of objects ect , alot quicker and more accurate
today i drew this , 15" duplex pump , in 4 hours , yes a long way to go ,
In turbo cad , i like the Snaps , once you learn the keyboard short cuts its so fast , even adding draft to all sides for mould making is easy , just do it before joining objects
i think Turbo cad 16pro is cheaper now , at $200 ,ive only owned it for 18 months , and im still learning more , in the last 6 months im just getting quicker and quicker
its so easy to draw , I did some " art work " for web pages , in CAD