Please also tell me the reason of your suggestion.For example which
is the easier to use, or which is nearest the bench working
You asked a very important question "which software is nearest to
the bench working techniques" My answer would be none. All of them,
that I have seen, targeted to casting. Software makes good images,
but that is about it. If you looking for software which would help
you to visualize the actual process of making, it is either
traditional CAD package with rendering capability. The drawback is
that good ones are very expensive.
If you are comfortable with computer graphics, look for software
which is based on CSG, with stands for Constructive Solid Geometry.
Avoid software bases on polygon modeling, nurbs, splines and etc.
They are fine if you making wax models, but for traditional bench
work CSG is the closest.
I had been using POVRay, which is free and much better than
commercial software. If you are using Windows, it is a good choice,
but be prepared to spend some time learning it. It does not work on
Macs any longer, so I am using Adobe Illustrator.
You can also take a look at TurboCAD, which has good CSG capability,
but be warned. I tried it a few years ago and found it to be very
buggy. Whether it was fixed or not, I have no idea.