Well, I'll plough my lonely furrow once again!
I use DesignCAD Pro 3D which is now published by IMSI, the same people who publish TurboCad, although they appear to go to great lengths to not publish anything about it, DesignCAD that is.
I first came across DesignCAD when looking for a replacement for Draft Choice for Windows (which, incidently is still available – free) as Draft Choice didn't want to work with my then computer setup. DesignCAD is similar to Draft Choice in that a lot of commands, especially the oft used commands, can be activated straight from the keyboard, which saves messing about looking for the appropriate command in all the menu trees. I actually use a very old version, DC2000, but also have a later version, DC17 which is just as easy to use. The reason for using the old version is because I am running the program under Linux using WINE, the compatibility program and DC17 is slightly unbehaved in my particular system, But that should not bother you if you are running Windows.
I have just done a search and discovered that in the UK, the only version that appears readily available, at what seems to me to be an exhorbitant price, is DC2000, which as it's name implied, hails from 2000 (actually 1999 as this is the version I use). There are other versions available, but as an import from America and I do have to wonder about import duties etc.
In respect of TurboCad, when I tried it, I found it absolutely abominable, nonsensical, and yes, stupid. Nothing seemed intuitive, and I tried three different versions! In contrast, I found DesignCAD a joy to use. Having said that, I am aware that TurboCad has a large fan base, but is that because it gets pushed so much? I have seen it said that one either gets on with TurboCad, or one does not, and if the latter, well then…..
As I said Draft Choice is still available, although it is, and has been, unsupported for many a year. Licensing is free and the codes are available from the website (look for Draft Choice). It is old, it is 2D only, but for a raw beginner, as I was, it does have a very good introductory manual. As I said, I'm now using Linux so I can't comment on whether or not it will run satisfactorily on modern computers but it could be worth a try, even if you have to resort to something like Virtual Box (also free) to get it running.
Regards,
Peter G. Shaw